Attachment #407836 for bug #216099

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2020-09-02  Chris Dumez  <cdumez@apple.com>

        Choose adequate number of channels for ConvolverNode's output
        https://bugs.webkit.org/show_bug.cgi?id=216099

        Reviewed by Eric Carlson.

        Choose adequate number of channels for ConvolverNode's output. We were using 2 channels for
        the output no matter what but we're supposed to use a single channel if both the input
        and the response buffer are mono.

        This is based on the following Blink change by Raymond Toy:
        - https://codereview.chromium.org/2732523003

        No new tests, rebaselined existing tests.

        * Modules/webaudio/ConvolverNode.cpp:
        (WebCore::computeNumberOfOutputChannels):
        (WebCore::ConvolverNode::create):
        Set the shouldNormalize flag *before* we set the buffer since setBuffer() relies on
        the flag. This gives us a few more test passes.

        (WebCore::ConvolverNode::ConvolverNode):
        (WebCore::ConvolverNode::setBuffer):
        (WebCore::ConvolverNode::checkNumberOfChannelsForInput):
        * Modules/webaudio/ConvolverNode.h:
        * platform/audio/Reverb.cpp:
        (WebCore::Reverb::Reverb):
        (WebCore::Reverb::initialize):
        (WebCore::Reverb::process):
        * platform/audio/Reverb.h:

2020-09-02  Chris Dumez  <cdumez@apple.com>

        Don't modify the response when creating a ConvolverNode

Lines 47-52 namespace WebCore { a/Source/WebCore/Modules/webaudio/ConvolverNode.cpp_sec1
- a/Source/WebCore/Modules/webaudio/ConvolverNode.cpp -4 / +43 lines
47		47
48	WTF_MAKE_ISO_ALLOCATED_IMPL(ConvolverNode);	48	WTF_MAKE_ISO_ALLOCATED_IMPL(ConvolverNode);
49		49
		50	static unsigned computeNumberOfOutputChannels(unsigned inputChannels, unsigned responseChannels)
		51	{
		52	// The number of output channels for a Convolver must be one or two. And can only be one if
		53	// there's a mono source and a mono response buffer.
		54	return (inputChannels == 1 && responseChannels == 1) ? 1u : 2u;
		55	}
		56
50	ExceptionOr<Ref<ConvolverNode>> ConvolverNode::create(BaseAudioContext& context, ConvolverOptions&& options)	57	ExceptionOr<Ref<ConvolverNode>> ConvolverNode::create(BaseAudioContext& context, ConvolverOptions&& options)
51	{	58	{
52	if (context.isStopped())	59	if (context.isStopped())
Lines 60-71 ExceptionOr<Ref<ConvolverNode>> ConvolverNode::create(BaseAudioContext& context, a/Source/WebCore/Modules/webaudio/ConvolverNode.cpp_sec2
60	if (result.hasException())	67	if (result.hasException())
61	return result.releaseException();	68	return result.releaseException();
62		69
		70	node->setNormalize(!options.disableNormalization);
		71
63	result = node->setBuffer(WTFMove(options.buffer));	72	result = node->setBuffer(WTFMove(options.buffer));
64	if (result.hasException())	73	if (result.hasException())
65	return result.releaseException();	74	return result.releaseException();
66		75
67	node->setNormalize(!options.disableNormalization);
68
69	return node;	76	return node;
70	}	77	}
71		78
Lines 75-81 ConvolverNode::ConvolverNode(BaseAudioContext& context) a/Source/WebCore/Modules/webaudio/ConvolverNode.cpp_sec3
75	setNodeType(NodeTypeConvolver);	82	setNodeType(NodeTypeConvolver);
76		83
77	addInput(makeUnique<AudioNodeInput>(this));	84	addInput(makeUnique<AudioNodeInput>(this));
78	addOutput(makeUnique<AudioNodeOutput>(this, 2));	85	addOutput(makeUnique<AudioNodeOutput>(this, 1));
79		86
80	initialize();	87	initialize();
81	}	88	}
Lines 163-175 ExceptionOr<void> ConvolverNode::setBuffer(RefPtr<AudioBuffer>&& buffer) a/Source/WebCore/Modules/webaudio/ConvolverNode.cpp_sec4
163		170
164	// Create the reverb with the given impulse response.	171	// Create the reverb with the given impulse response.
165	bool useBackgroundThreads = !context().isOfflineContext();	172	bool useBackgroundThreads = !context().isOfflineContext();
166	auto reverb = makeUnique<Reverb>(bufferBus.get(), AudioNode::ProcessingSizeInFrames, MaxFFTSize, 2, useBackgroundThreads, m_normalize);	173	auto reverb = makeUnique<Reverb>(bufferBus.get(), AudioNode::ProcessingSizeInFrames, MaxFFTSize, useBackgroundThreads, m_normalize);
167		174
168	{	175	{
		176	// The context must be locked since changing the buffer can re-configure the number of channels that are output.
		177	BaseAudioContext::AutoLocker contextLocker(context());
		178
169	// Synchronize with process().	179	// Synchronize with process().
170	auto locker = holdLock(m_processMutex);	180	auto locker = holdLock(m_processMutex);
		181
171	m_reverb = WTFMove(reverb);	182	m_reverb = WTFMove(reverb);
172	m_buffer = WTFMove(buffer);	183	m_buffer = WTFMove(buffer);
		184	if (m_buffer) {
		185	// This will propagate the channel count to any nodes connected further downstream in the graph.
		186	output(0)->setNumberOfChannels(computeNumberOfOutputChannels(input(0)->numberOfChannels(), m_buffer->numberOfChannels()));
		187	}
173	}	188	}
174		189
175	return { };	190	return { };
Lines 211-216 ExceptionOr<void> ConvolverNode::setChannelCountMode(ChannelCountMode mode) a/Source/WebCore/Modules/webaudio/ConvolverNode.cpp_sec5
211	return AudioNode::setChannelCountMode(mode);	226	return AudioNode::setChannelCountMode(mode);
212	}	227	}
213		228
		229	void ConvolverNode::checkNumberOfChannelsForInput(AudioNodeInput* input)
		230	{
		231	ASSERT(context().isAudioThread() && context().isGraphOwner());
		232
		233	if (m_buffer) {
		234	unsigned numberOfOutputChannels = computeNumberOfOutputChannels(input->numberOfChannels(), m_buffer->numberOfChannels());
		235
		236	if (isInitialized() && numberOfOutputChannels != output(0)->numberOfChannels()) {
		237	// We're already initialized but the channel count has changed.
		238	uninitialize();
		239	}
		240
		241	if (!isInitialized()) {
		242	// This will propagate the channel count to any nodes connected further
		243	// downstream in the graph.
		244	output(0)->setNumberOfChannels(numberOfOutputChannels);
		245	initialize();
		246	}
		247	}
		248
		249	// Update the input's internal bus if needed.
		250	AudioNode::checkNumberOfChannelsForInput(input);
		251	}
		252
214	} // namespace WebCore	253	} // namespace WebCore
215		254
216	#endif // ENABLE(WEB_AUDIO)	255	#endif // ENABLE(WEB_AUDIO)

Lines 61-66 private: a/Source/WebCore/Modules/webaudio/ConvolverNode.h_sec1
- a/Source/WebCore/Modules/webaudio/ConvolverNode.h +1 lines
61	void reset() final;	61	void reset() final;
62	void initialize() final;	62	void initialize() final;
63	void uninitialize() final;	63	void uninitialize() final;
		64	void checkNumberOfChannelsForInput(AudioNodeInput*) final;
64		65
65	std::unique_ptr<Reverb> m_reverb;	66	std::unique_ptr<Reverb> m_reverb;
66	RefPtr<AudioBuffer> m_buffer;	67	RefPtr<AudioBuffer> m_buffer;



    return scale;
}

Reverb::Reverb(AudioBus* impulseResponse, size_t renderSliceSize, size_t maxFFTSize, bool useBackgroundThreads, bool normalize)
{
    float scale = 1;

    if (normalize)
        scale = calculateNormalizationScale(impulseResponse);

    initialize(impulseResponse, renderSliceSize, maxFFTSize, useBackgroundThreads, scale);
}

void Reverb::initialize(AudioBus* impulseResponseBuffer, size_t renderSliceSize, size_t maxFFTSize, bool useBackgroundThreads, float scale)
{
    m_impulseResponseLength = impulseResponseBuffer->length();

    // The reverb can handle a mono impulse response and still do stereo processing
    m_numberOfResponseChannels = impulseResponseBuffer->numberOfChannels();
    unsigned convolverCount = std::max(m_numberOfResponseChannels, 2u);
    m_convolvers.reserveCapacity(convolverCount);

    int convolverRenderPhase = 0;
    for (unsigned i = 0; i < convolverCount; ++i) {
        auto* channel = impulseResponseBuffer->channel(std::min(i, m_numberOfResponseChannels - 1));

        m_convolvers.append(makeUnique<ReverbConvolver>(channel, renderSliceSize, maxFFTSize, convolverRenderPhase, useBackgroundThreads, scale));



    // For "True" stereo processing we allocate a temporary buffer to avoid repeatedly allocating it in the process() method.
    // It can be bad to allocate memory in a real-time thread.
    if (m_numberOfResponseChannels == 4)
        m_tempBuffer = AudioBus::create(2, MaxFrameSize);
}

void Reverb::process(const AudioBus* sourceBus, AudioBus* destinationBus, size_t framesToProcess)
{
    // Do a fairly comprehensive sanity check.
    // If these conditions are satisfied, all of the source and destination
    // pointers will be valid for the various matrixing cases.
    ASSERT(sourceBus);
    ASSERT(destinationBus);
    ASSERT(sourceBus->numberOfChannels() > 0u);
    ASSERT(destinationBus->numberOfChannels() > 0u);
    ASSERT(framesToProcess <= MaxFrameSize);
    ASSERT(framesToProcess <= sourceBus->length());
    ASSERT(framesToProcess <= destinationBus->length());

    // For now only handle mono or stereo output
    if (destinationBus->numberOfChannels() > 2) {

    // Handle input -> output matrixing...
    size_t numInputChannels = sourceBus->numberOfChannels();
    size_t numOutputChannels = destinationBus->numberOfChannels();
    size_t numberOfResponseChannels = m_numberOfResponseChannels;

    ASSERT(numInputChannels <= 2ul);
    ASSERT(numOutputChannels <= 2ul);
    ASSERT(numberOfResponseChannels == 1 || numberOfResponseChannels == 2 || numberOfResponseChannels == 4);

    // These are the possible combinations of number inputs, response
    // channels and outputs channels that need to be supported:
    //
    //   numInputChannels:         1 or 2
    //   numberOfResponseChannels: 1, 2, or 4
    //   numOutputChannels:        1 or 2
    //
    // Not all possible combinations are valid. numOutputChannels is
    // one only if both numInputChannels and numberOfResponseChannels are 1.
    // Otherwise numOutputChannels MUST be 2.
    //
    // The valid combinations are
    //
    //   Case     in -> resp -> out
    //   1        1 -> 1 -> 1
    //   2        1 -> 2 -> 2
    //   3        1 -> 4 -> 2
    //   4        2 -> 1 -> 2
    //   5        2 -> 2 -> 2
    //   6        2 -> 4 -> 2

    if (numInputChannels == 2 && (numberOfResponseChannels == 1 || numberOfResponseChannels == 2) && numOutputChannels == 2) {
        // Case 4 and 5: 2 -> 2 -> 2 or 2 -> 1 -> 2.
        //
        // These can be handled in the same way because in the latter
        // case, two connvolvers are still created with the second being a
        // copy of the first.
        const AudioChannel* sourceChannelR = sourceBus->channel(1);
        AudioChannel* destinationChannelR = destinationBus->channel(1);
        m_convolvers[0]->process(sourceChannelL, destinationChannelL, framesToProcess);
        m_convolvers[1]->process(sourceChannelR, destinationChannelR, framesToProcess);
    } else  if (numInputChannels == 1 && numOutputChannels == 2 && numberOfResponseChannels == 2) {
        // Case 2: 1 -> 2 -> 2
        for (int i = 0; i < 2; ++i) {
            AudioChannel* destinationChannel = destinationBus->channel(i);
            m_convolvers[i]->process(sourceChannelL, destinationChannel, framesToProcess);
        }
    } else if (numInputChannels == 1 && numberOfResponseChannels == 1) {
        // Case 1: 1 -> 1 -> 1
        ASSERT(numOutputChannels == 1ul);

        // simply copy L -> R
        AudioChannel* destinationChannelR = destinationBus->channel(1);
        bool isCopySafe = destinationChannelL->data() && destinationChannelR->data() && destinationChannelL->length() >= framesToProcess && destinationChannelR->length() >= framesToProcess;
        ASSERT(isCopySafe);
        if (!isCopySafe)
            return;
        memcpy(destinationChannelR->mutableData(), destinationChannelL->data(), sizeof(float) * framesToProcess);
    } else if (numInputChannels == 1 && numReverbChannels == 1 && numOutputChannels == 1) {
        // 1 -> 1 -> 1
        m_convolvers[0]->process(sourceChannelL, destinationChannelL, framesToProcess);
    } else if (numInputChannels == 2 && numberOfResponseChannels == 4 && numOutputChannels == 2) {
        // Case 6: 2 -> 4 -> 2 ("True" stereo)
        const AudioChannel* sourceChannelR = sourceBus->channel(1);
        AudioChannel* destinationChannelR = destinationBus->channel(1);


        m_convolvers[3]->process(sourceChannelR, tempChannelR, framesToProcess);

        destinationBus->sumFrom(*m_tempBuffer);
    } else if (numInputChannels == 1 && numberOfResponseChannels == 4 && numOutputChannels == 2) {
        // Case 3: 1 -> 4 -> 2 (Processing mono with "True" stereo impulse
        // response) This is an inefficient use of a four-channel impulse
        // response, but we should handle the case.
        AudioChannel* destinationChannelR = destinationBus->channel(1);

        AudioChannel* tempChannelL = m_tempBuffer->channel(0);


        destinationBus->sumFrom(*m_tempBuffer);
    } else {
        ASSERT_NOT_REACHED();
        // FIXME: add code for 5.1 support...
        destinationBus->zero();
    }
}

Lines 44-50 public: a/Source/WebCore/platform/audio/Reverb.h_sec1
- a/Source/WebCore/platform/audio/Reverb.h -2 / +5 lines
44	enum { MaxFrameSize = 256 };	44	enum { MaxFrameSize = 256 };
45		45
46	// renderSliceSize is a rendering hint, so the FFTs can be optimized to not all occur at the same time (very bad when rendering on a real-time thread).	46	// renderSliceSize is a rendering hint, so the FFTs can be optimized to not all occur at the same time (very bad when rendering on a real-time thread).
47	Reverb(AudioBus* impulseResponseBuffer, size_t renderSliceSize, size_t maxFFTSize, size_t numberOfChannels, bool useBackgroundThreads, bool normalize);	47	Reverb(AudioBus* impulseResponseBuffer, size_t renderSliceSize, size_t maxFFTSize, bool useBackgroundThreads, bool normalize);
48		48
49	void process(const AudioBus* sourceBus, AudioBus* destinationBus, size_t framesToProcess);	49	void process(const AudioBus* sourceBus, AudioBus* destinationBus, size_t framesToProcess);
50	void reset();	50	void reset();
Lines 53-62 public: a/Source/WebCore/platform/audio/Reverb.h_sec2
53	size_t latencyFrames() const;	53	size_t latencyFrames() const;
54		54
55	private:	55	private:
56	void initialize(AudioBus* impulseResponseBuffer, size_t renderSliceSize, size_t maxFFTSize, size_t numberOfChannels, bool useBackgroundThreads, float scale);	56	void initialize(AudioBus* impulseResponseBuffer, size_t renderSliceSize, size_t maxFFTSize, bool useBackgroundThreads, float scale);
57		57
58	size_t m_impulseResponseLength;	58	size_t m_impulseResponseLength;
59		59
		60	// The actual number of channels in the response. This can be less
		61	// than the number of ReverbConvolver's in \|m_convolvers\|.
		62	unsigned m_numberOfResponseChannels { 0 };
60	Vector<std::unique_ptr<ReverbConvolver>> m_convolvers;	63	Vector<std::unique_ptr<ReverbConvolver>> m_convolvers;
61		64
62	// For "True" stereo processing	65	// For "True" stereo processing



2020-09-02  Chris Dumez  <cdumez@apple.com>

        Choose adequate number of channels for ConvolverNode's output
        https://bugs.webkit.org/show_bug.cgi?id=216099

        Reviewed by Eric Carlson.

        Rebaseline WPT tests now that more checks are passing.

        * web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-cascade-expected.txt:
        * web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-response-1-chan-expected.txt:
        * web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-response-2-chan-expected.txt:
        * web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-response-4-chan-expected.txt:
        * web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-upmixing-1-channel-response-expected.txt:
        * web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/realtime-conv-expected.txt:

2020-09-02  Chris Dumez  <cdumez@apple.com>

        Fix rounding for DelayDSPKernel's buffer size calculation

Lines 3-9 PASS # AUDIT TASK RUNNER STARTED. a/LayoutTests/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-cascade-expected.txt_sec1
- a/LayoutTests/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-cascade-expected.txt -3 / +3 lines
3	PASS Executing "cascade-mono"	3	PASS Executing "cascade-mono"
4	PASS Audit report	4	PASS Audit report
5	PASS > [cascade-mono] Cascaded mono convolvers	5	PASS > [cascade-mono] Cascaded mono convolvers
6	FAIL X Output of cascaded mono convolvers should have contain at least one value different from 0. assert_true: expected true got false	6	PASS Output of cascaded mono convolvers is not constantly 0 (contains 1996 different values).
7	FAIL < [cascade-mono] 1 out of 1 assertions were failed. assert_true: expected true got false	7	PASS < [cascade-mono] All assertions passed. (total 1 assertions)
8	FAIL # AUDIT TASK RUNNER FINISHED: 1 out of 1 tasks were failed. assert_true: expected true got false	8	PASS # AUDIT TASK RUNNER FINISHED: 1 tasks ran successfully.
9		9

Lines 16-42 PASS > [initialize] Convolver response with one channel a/LayoutTests/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-response-1-chan-expected.txt_sec1
- a/LayoutTests/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-response-1-chan-expected.txt -93 / +13 lines
16	PASS new AudioBuffer({numberOfChannels: 1, length: 2, sampleRate: 8192}) did not throw an exception.	16	PASS new AudioBuffer({numberOfChannels: 1, length: 2, sampleRate: 8192}) did not throw an exception.
17	PASS < [initialize] All assertions passed. (total 1 assertions)	17	PASS < [initialize] All assertions passed. (total 1 assertions)
18	PASS > [1-channel input] produces 1-channel output	18	PASS > [1-channel input] produces 1-channel output
19	FAIL X 1: Channel 1: Expected 0 for all values but found 1278 unexpected values:	19	PASS 1: Channel 1 contains only the constant 0.
20	Index Actual	20	PASS Convolver output equals [0,0,0.057564035058021545,0.11493717133998871,0.17192906141281128,0.22835084795951843,0.2840152382850647,0.3387378752231598,0.39233696460723877,0.44463497400283813,0.4954586327075958,0.5446387529373169,0.5920130610466003,0.6374237537384033,0.6807206869125366,0.7217600345611572...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
21	[2] 0.0005517149693332613	21	PASS < [1-channel input] All assertions passed. (total 2 assertions)
22	[3] 0.0011016002390533686
23	[4] 0.0016478316392749548
24	[5] 0.0021885987371206284
25	...and 1274 more errors. assert_true: expected true got false
26	FAIL X Convolver output does not equal [0,0,0.057564035058021545,0.11493717133998871,0.17192906141281128,0.22835084795951843,0.2840152382850647,0.3387378752231598,0.39233696460723877,0.44463497400283813,0.4954586327075958,0.5446387529373169,0.5920130610466003,0.6374237537384033,0.6807206869125366,0.7217600345611572...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
27	Index Actual Expected AbsError RelError Test threshold
28	[2] 5.5171496933326125e-4 5.7564035058021545e-2 5.7012320088688284e-2 9.9041563071843097e-1 4.7683715820312500e-7
29	[3] 1.1016002390533686e-3 1.1493717133998871e-1 1.1383557110093534e-1 9.9041563119911147e-1 4.7683715820312500e-7
30	[4] 1.6478316392749548e-3 1.7192906141281128e-1 1.7028122977353632e-1 9.9041563057615711e-1 4.7683715820312500e-7
31	[5] 2.1885987371206284e-3 2.2835084795951843e-1 2.2616224922239780e-1 9.9041563122415632e-1 4.7683715820312500e-7
32	[6] 2.7221068739891052e-3 2.8401523828506470e-1 2.8129313141107559e-1 9.9041563089915285e-1 4.7683715820312500e-7
33	...and 1273 more errors.
34	Max AbsError of 9.9041563086211681e-1 at index of 301.
35	[301] -9.5843691378831863e-3 -1.0000000000000000e+0 9.9041563086211681e-1 9.9041563086211681e-1 4.7683715820312500e-7
36	Max RelError of 9.9041563141564226e-1 at index of 966.
37	[966] -7.8987376764416695e-3 -8.2412707805633545e-1 8.1622834037989378e-1 9.9041563141564226e-1 4.7683715820312500e-7
38	assert_true: expected true got false
39	FAIL < [1-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false
40	PASS > [2-channel input] produces 2-channel output	22	PASS > [2-channel input] produces 2-channel output
41	FAIL X 2: Channel 0 does not equal [0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248,-0.8348914980888367...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.	23	FAIL X 2: Channel 0 does not equal [0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248,-0.8348914980888367...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
42	Index Actual Expected AbsError RelError Test threshold	24	Index Actual Expected AbsError RelError Test threshold
Lines 194-273 FAIL X 4 chan downmix explicit: Channel 1 does not equal [0,0,0.971980094909668, a/LayoutTests/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-response-1-chan-expected.txt_sec2
194	assert_true: expected true got false	176	assert_true: expected true got false
195	FAIL < [4-channel input, explicit] 2 out of 2 assertions were failed. assert_true: expected true got false	177	FAIL < [4-channel input, explicit] 2 out of 2 assertions were failed. assert_true: expected true got false
196	PASS > [5.1-channel input, explicit] 5.1->2 explicit downmix producing 2-channel output	178	PASS > [5.1-channel input, explicit] 5.1->2 explicit downmix producing 2-channel output
197	FAIL X 5.1 chan downmix explicit: Channel 0 does not equal [0,0,2.302107334136963,2.0779101848602295,1.536412000656128,0.8359496593475342,-0.2123139351606369,-0.0052925655618309975,0.8362105488777161,1.0198440551757812,0.32619065046310425,-0.6783384680747986,-1.0576409101486206,-0.5491995811462402,0.2516634166240692,-0.10923532396554947...] with an element-wise tolerance of {"absoluteThreshold":0.0000011511867343774294,"relativeThreshold":0}.	179	PASS 5.1 chan downmix explicit: Channel 0 equals [0,0,2.302107334136963,2.0779101848602295,1.536412000656128,0.8359496593475342,-0.2123139351606369,-0.0052925655618309975,0.8362105488777161,1.0198440551757812,0.32619065046310425,-0.6783384680747986,-1.0576409101486206,-0.5491995811462402,0.2516634166240692,-0.10923532396554947...] with an element-wise tolerance of {"absoluteThreshold":0.0000011511867343774294,"relativeThreshold":0}.
198	Index Actual Expected AbsError RelError Test threshold	180	PASS 5.1 chan downmix explicit: Channel 1 equals [0,0,2.407027244567871,1.851643443107605,1.2457610368728638,0.5805020928382874,0.3625302314758301,0.1648862212896347,-0.7450207471847534,-1.5345407724380493,-1.904326319694519,-0.7297847867012024,0.01058983150869608,0.7125816941261292,1.75357985496521,0.26786839962005615...] with an element-wise tolerance of {"absoluteThreshold":0.0000011511867343774294,"relativeThreshold":0}.
199	[2] 0.0000000000000000e+0 2.3021073341369629e+0 2.3021073341369629e+0 1.0000000000000000e+0 1.1511867343774294e-6	181	PASS < [5.1-channel input, explicit] All assertions passed. (total 2 assertions)
200	[3] 0.0000000000000000e+0 2.0779101848602295e+0 2.0779101848602295e+0 1.0000000000000000e+0 1.1511867343774294e-6
201	[4] 0.0000000000000000e+0 1.5364120006561279e+0 1.5364120006561279e+0 1.0000000000000000e+0 1.1511867343774294e-6
202	[5] 0.0000000000000000e+0 8.3594965934753418e-1 8.3594965934753418e-1 1.0000000000000000e+0 1.1511867343774294e-6
203	[6] 0.0000000000000000e+0 -2.1231393516063690e-1 2.1231393516063690e-1 1.0000000000000000e+0 1.1511867343774294e-6
204	...and 1271 more errors.
205	Max AbsError of 2.4404382705688477e+0 at index of 896.
206	[896] 0.0000000000000000e+0 2.4404382705688477e+0 2.4404382705688477e+0 1.0000000000000000e+0 1.1511867343774294e-6
207	Max RelError of 1.0000000000000000e+0 at index of 2.
208	assert_true: expected true got false
209	FAIL X 5.1 chan downmix explicit: Channel 1 does not equal [0,0,2.407027244567871,1.851643443107605,1.2457610368728638,0.5805020928382874,0.3625302314758301,0.1648862212896347,-0.7450207471847534,-1.5345407724380493,-1.904326319694519,-0.7297847867012024,0.01058983150869608,0.7125816941261292,1.75357985496521,0.26786839962005615...] with an element-wise tolerance of {"absoluteThreshold":0.0000011511867343774294,"relativeThreshold":0}.
210	Index Actual Expected AbsError RelError Test threshold
211	[2] 0.0000000000000000e+0 2.4070272445678711e+0 2.4070272445678711e+0 1.0000000000000000e+0 1.1511867343774294e-6
212	[3] 0.0000000000000000e+0 1.8516434431076050e+0 1.8516434431076050e+0 1.0000000000000000e+0 1.1511867343774294e-6
213	[4] 0.0000000000000000e+0 1.2457610368728638e+0 1.2457610368728638e+0 1.0000000000000000e+0 1.1511867343774294e-6
214	[5] 0.0000000000000000e+0 5.8050209283828735e-1 5.8050209283828735e-1 1.0000000000000000e+0 1.1511867343774294e-6
215	[6] 0.0000000000000000e+0 3.6253023147583008e-1 3.6253023147583008e-1 1.0000000000000000e+0 1.1511867343774294e-6
216	...and 1272 more errors.
217	Max AbsError of 2.4601652622222900e+0 at index of 186.
218	[186] 0.0000000000000000e+0 -2.4601652622222900e+0 2.4601652622222900e+0 1.0000000000000000e+0 1.1511867343774294e-6
219	Max RelError of 1.0000000000000000e+0 at index of 2.
220	assert_true: expected true got false
221	FAIL < [5.1-channel input, explicit] 2 out of 2 assertions were failed. assert_true: expected true got false
222	PASS > [mono-upmix-explicit] 1->2 upmix, count mode explicit	182	PASS > [mono-upmix-explicit] 1->2 upmix, count mode explicit
223	PASS new ConvolverNode({channelCountMode: 'explicit'}) did not throw an exception.	183	PASS new ConvolverNode({channelCountMode: 'explicit'}) did not throw an exception.
224	FAIL X 1->2 explicit upmix: channel 0 does not equal [0,0.057564035058021545,0.11493717133998871,0.17192906141281128,0.22835084795951843,0.2840152382850647,0.3387378752231598,0.39233696460723877,0.44463497400283813,0.4954586327075958,0.5446387529373169,0.5920130610466003,0.6374237537384033,0.6807206869125366,0.7217600345611572,0.7604058980941772...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.	184	PASS 1->2 explicit upmix: channel 0 equals [0,0.057564035058021545,0.11493717133998871,0.17192906141281128,0.22835084795951843,0.2840152382850647,0.3387378752231598,0.39233696460723877,0.44463497400283813,0.4954586327075958,0.5446387529373169,0.5920130610466003,0.6374237537384033,0.6807206869125366,0.7217600345611572,0.7604058980941772...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
225	Index Actual Expected AbsError RelError Test threshold	185	PASS 1->2 explicit upmix: channel 1 equals [0,0.057564035058021545,0.11493717133998871,0.17192906141281128,0.22835084795951843,0.2840152382850647,0.3387378752231598,0.39233696460723877,0.44463497400283813,0.4954586327075958,0.5446387529373169,0.5920130610466003,0.6374237537384033,0.6807206869125366,0.7217600345611572,0.7604058980941772...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
226	[1] 0.0000000000000000e+0 5.7564035058021545e-2 5.7564035058021545e-2 1.0000000000000000e+0 4.7683715820312500e-7	186	PASS < [mono-upmix-explicit] All assertions passed. (total 3 assertions)
227	[2] 0.0000000000000000e+0 1.1493717133998871e-1 1.1493717133998871e-1 1.0000000000000000e+0 4.7683715820312500e-7
228	[3] 0.0000000000000000e+0 1.7192906141281128e-1 1.7192906141281128e-1 1.0000000000000000e+0 4.7683715820312500e-7
229	[4] 0.0000000000000000e+0 2.2835084795951843e-1 2.2835084795951843e-1 1.0000000000000000e+0 4.7683715820312500e-7
230	[5] 0.0000000000000000e+0 2.8401523828506470e-1 2.8401523828506470e-1 1.0000000000000000e+0 4.7683715820312500e-7
231	...and 1273 more errors.
232	Max AbsError of 1.0000000000000000e+0 at index of 300.
233	[300] 0.0000000000000000e+0 -1.0000000000000000e+0 1.0000000000000000e+0 1.0000000000000000e+0 4.7683715820312500e-7
234	Max RelError of 1.0000000000000000e+0 at index of 1.
235	assert_true: expected true got false
236	FAIL X 1->2 explicit upmix: channel 1 does not equal [0,0.057564035058021545,0.11493717133998871,0.17192906141281128,0.22835084795951843,0.2840152382850647,0.3387378752231598,0.39233696460723877,0.44463497400283813,0.4954586327075958,0.5446387529373169,0.5920130610466003,0.6374237537384033,0.6807206869125366,0.7217600345611572,0.7604058980941772...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
237	Index Actual Expected AbsError RelError Test threshold
238	[1] 0.0000000000000000e+0 5.7564035058021545e-2 5.7564035058021545e-2 1.0000000000000000e+0 4.7683715820312500e-7
239	[2] 0.0000000000000000e+0 1.1493717133998871e-1 1.1493717133998871e-1 1.0000000000000000e+0 4.7683715820312500e-7
240	[3] 0.0000000000000000e+0 1.7192906141281128e-1 1.7192906141281128e-1 1.0000000000000000e+0 4.7683715820312500e-7
241	[4] 0.0000000000000000e+0 2.2835084795951843e-1 2.2835084795951843e-1 1.0000000000000000e+0 4.7683715820312500e-7
242	[5] 0.0000000000000000e+0 2.8401523828506470e-1 2.8401523828506470e-1 1.0000000000000000e+0 4.7683715820312500e-7
243	...and 1273 more errors.
244	Max AbsError of 1.0000000000000000e+0 at index of 300.
245	[300] 0.0000000000000000e+0 -1.0000000000000000e+0 1.0000000000000000e+0 1.0000000000000000e+0 4.7683715820312500e-7
246	Max RelError of 1.0000000000000000e+0 at index of 1.
247	assert_true: expected true got false
248	FAIL < [mono-upmix-explicit] 2 out of 3 assertions were failed. assert_true: expected true got false
249	PASS > [mono-upmix-clamped-max] 1->2 upmix, count mode clamped-max	187	PASS > [mono-upmix-clamped-max] 1->2 upmix, count mode clamped-max
250	PASS new ConvolverNode({channelCountMode: 'clamped-max'}) did not throw an exception.	188	PASS new ConvolverNode({channelCountMode: 'clamped-max'}) did not throw an exception.
251	FAIL X 1->2 clamped-max upmix: channel 0 does not equal [0,0.057564035058021545,0.11493717133998871,0.17192906141281128,0.22835084795951843,0.2840152382850647,0.3387378752231598,0.39233696460723877,0.44463497400283813,0.4954586327075958,0.5446387529373169,0.5920130610466003,0.6374237537384033,0.6807206869125366,0.7217600345611572,0.7604058980941772...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.	189	PASS 1->2 clamped-max upmix: channel 0 equals [0,0.057564035058021545,0.11493717133998871,0.17192906141281128,0.22835084795951843,0.2840152382850647,0.3387378752231598,0.39233696460723877,0.44463497400283813,0.4954586327075958,0.5446387529373169,0.5920130610466003,0.6374237537384033,0.6807206869125366,0.7217600345611572,0.7604058980941772...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
252	Index Actual Expected AbsError RelError Test threshold	190	PASS 1->2 clamped-max upmix: channel 1 contains only the constant 0.
253	[1] 5.5171496933326125e-4 5.7564035058021545e-2 5.7012320088688284e-2 9.9041563071843097e-1 4.7683715820312500e-7	191	PASS < [mono-upmix-clamped-max] All assertions passed. (total 3 assertions)
254	[2] 1.1016002390533686e-3 1.1493717133998871e-1 1.1383557110093534e-1 9.9041563119911147e-1 4.7683715820312500e-7	192	FAIL # AUDIT TASK RUNNER FINISHED: 6 out of 11 tasks were failed. assert_true: expected true got false
255	[3] 1.6478316392749548e-3 1.7192906141281128e-1 1.7028122977353632e-1 9.9041563057615711e-1 4.7683715820312500e-7
256	[4] 2.1885987371206284e-3 2.2835084795951843e-1 2.2616224922239780e-1 9.9041563122415632e-1 4.7683715820312500e-7
257	[5] 2.7221068739891052e-3 2.8401523828506470e-1 2.8129313141107559e-1 9.9041563089915285e-1 4.7683715820312500e-7
258	...and 1273 more errors.
259	Max AbsError of 9.9041563086211681e-1 at index of 300.
260	[300] -9.5843691378831863e-3 -1.0000000000000000e+0 9.9041563086211681e-1 9.9041563086211681e-1 4.7683715820312500e-7
261	Max RelError of 9.9041563141564226e-1 at index of 965.
262	[965] -7.8987376764416695e-3 -8.2412707805633545e-1 8.1622834037989378e-1 9.9041563141564226e-1 4.7683715820312500e-7
263	assert_true: expected true got false
264	FAIL X 1->2 clamped-max upmix: channel 1: Expected 0 for all values but found 1278 unexpected values:
265	Index Actual
266	[2] 0.0005517149693332613
267	[3] 0.0011016002390533686
268	[4] 0.0016478316392749548
269	[5] 0.0021885987371206284
270	...and 1274 more errors. assert_true: expected true got false
271	FAIL < [mono-upmix-clamped-max] 2 out of 3 assertions were failed. assert_true: expected true got false
272	FAIL # AUDIT TASK RUNNER FINISHED: 10 out of 11 tasks were failed. assert_true: expected true got false
273		193

Lines 15-270 PASS > [initialize] Convolver response with one channel a/LayoutTests/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-response-2-chan-expected.txt_sec1
- a/LayoutTests/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-response-2-chan-expected.txt -199 / +93 lines
15	PASS new AudioBuffer({numberOfChannels: 2, length: 4, sampleRate: 8192}) did not throw an exception.	15	PASS new AudioBuffer({numberOfChannels: 2, length: 4, sampleRate: 8192}) did not throw an exception.
16	PASS < [initialize] All assertions passed. (total 1 assertions)	16	PASS < [initialize] All assertions passed. (total 1 assertions)
17	PASS > [1-channel input] produces 2-channel output	17	PASS > [1-channel input] produces 2-channel output
18	FAIL X 1: Channel 0 does not equal [0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248,-0.8348914980888367...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.	18	PASS 1: Channel 0 equals [0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248,-0.8348914980888367...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
19	Index Actual Expected AbsError RelError Test threshold	19	PASS 1: Channel 1 equals [0,0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
20	[2] 1.2856653891503811e-2 9.4852632284164429e-1 9.3566966895014048e-1 9.8644565408265406e-1 4.7683715820312500e-7	20	PASS < [1-channel input] All assertions passed. (total 2 assertions)
21	[3] 1.1483675800263882e-2 8.4723204374313354e-1 8.3574836794286966e-1 9.8644565454638833e-1 4.7683715820312500e-7
22	[4] 1.1160055175423622e-2 8.2335621118545532e-1 8.1219615601003170e-1 9.8644565374765858e-1 4.7683715820312500e-7
23	[5] 1.1718356981873512e-2 8.6454612016677856e-1 8.5282776318490505e-1 9.8644565430515962e-1 4.7683715820312500e-7
24	[6] 1.1459184810519218e-2 8.4542512893676758e-1 8.3396594412624836e-1 9.8644565388666572e-1 4.7683715820312500e-7
25	...and 1271 more errors.
26	Max AbsError of 9.7670867852866650e-1 at index of 235.
27	[235] -1.3420553877949715e-2 -9.9012923240661621e-1 9.7670867852866650e-1 9.8644565432602205e-1 4.7683715820312500e-7
28	Max RelError of 9.8644565493170255e-1 at index of 196.
29	[196] 8.1549119204282761e-3 6.0164558887481689e-1 5.9349067695438862e-1 9.8644565493170255e-1 4.7683715820312500e-7
30	assert_true: expected true got false
31	FAIL X 1: Channel 1 does not equal [0,0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
32	Index Actual Expected AbsError RelError Test threshold
33	[3] 1.2856653891503811e-2 9.4852632284164429e-1 9.3566966895014048e-1 9.8644565408265406e-1 4.7683715820312500e-7
34	[4] 1.1483675800263882e-2 8.4723204374313354e-1 8.3574836794286966e-1 9.8644565454638833e-1 4.7683715820312500e-7
35	[5] 1.1160055175423622e-2 8.2335621118545532e-1 8.1219615601003170e-1 9.8644565374765858e-1 4.7683715820312500e-7
36	[6] 1.1718356981873512e-2 8.6454612016677856e-1 8.5282776318490505e-1 9.8644565430515962e-1 4.7683715820312500e-7
37	[7] 1.1459184810519218e-2 8.4542512893676758e-1 8.3396594412624836e-1 9.8644565388666572e-1 4.7683715820312500e-7
38	...and 1270 more errors.
39	Max AbsError of 9.7670867852866650e-1 at index of 236.
40	[236] -1.3420553877949715e-2 -9.9012923240661621e-1 9.7670867852866650e-1 9.8644565432602205e-1 4.7683715820312500e-7
41	Max RelError of 9.8644565493170255e-1 at index of 197.
42	[197] 8.1549119204282761e-3 6.0164558887481689e-1 5.9349067695438862e-1 9.8644565493170255e-1 4.7683715820312500e-7
43	assert_true: expected true got false
44	FAIL < [1-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false
45	PASS > [2-channel input] produces 2-channel output	21	PASS > [2-channel input] produces 2-channel output
46	FAIL X 2: Channel 0 does not equal [0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248,-0.8348914980888367...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.	22	PASS 2: Channel 0 equals [0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248,-0.8348914980888367...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
47	Index Actual Expected AbsError RelError Test threshold	23	PASS 2: Channel 1 equals [0,0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
48	[2] 1.2856653891503811e-2 9.4852632284164429e-1 9.3566966895014048e-1 9.8644565408265406e-1 4.7683715820312500e-7	24	PASS < [2-channel input] All assertions passed. (total 2 assertions)
49	[3] 1.1483675800263882e-2 8.4723204374313354e-1 8.3574836794286966e-1 9.8644565454638833e-1 4.7683715820312500e-7
50	[4] 1.1160055175423622e-2 8.2335621118545532e-1 8.1219615601003170e-1 9.8644565374765858e-1 4.7683715820312500e-7
51	[5] 1.1718356981873512e-2 8.6454612016677856e-1 8.5282776318490505e-1 9.8644565430515962e-1 4.7683715820312500e-7
52	[6] 1.1459184810519218e-2 8.4542512893676758e-1 8.3396594412624836e-1 9.8644565388666572e-1 4.7683715820312500e-7
53	...and 1271 more errors.
54	Max AbsError of 9.7670867852866650e-1 at index of 235.
55	[235] -1.3420553877949715e-2 -9.9012923240661621e-1 9.7670867852866650e-1 9.8644565432602205e-1 4.7683715820312500e-7
56	Max RelError of 9.8644565493170255e-1 at index of 196.
57	[196] 8.1549119204282761e-3 6.0164558887481689e-1 5.9349067695438862e-1 9.8644565493170255e-1 4.7683715820312500e-7
58	assert_true: expected true got false
59	FAIL X 2: Channel 1 does not equal [0,0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
60	Index Actual Expected AbsError RelError Test threshold
61	[3] 1.2856653891503811e-2 9.4852632284164429e-1 9.3566966895014048e-1 9.8644565408265406e-1 4.7683715820312500e-7
62	[4] 1.1483675800263882e-2 8.4723204374313354e-1 8.3574836794286966e-1 9.8644565454638833e-1 4.7683715820312500e-7
63	[5] 1.1160055175423622e-2 8.2335621118545532e-1 8.1219615601003170e-1 9.8644565374765858e-1 4.7683715820312500e-7
64	[6] 1.1718356981873512e-2 8.6454612016677856e-1 8.5282776318490505e-1 9.8644565430515962e-1 4.7683715820312500e-7
65	[7] 1.1459184810519218e-2 8.4542512893676758e-1 8.3396594412624836e-1 9.8644565388666572e-1 4.7683715820312500e-7
66	...and 1270 more errors.
67	Max AbsError of 9.7670867852866650e-1 at index of 236.
68	[236] -1.3420553877949715e-2 -9.9012923240661621e-1 9.7670867852866650e-1 9.8644565432602205e-1 4.7683715820312500e-7
69	Max RelError of 9.8644565493170255e-1 at index of 197.
70	[197] 8.1549119204282761e-3 6.0164558887481689e-1 5.9349067695438862e-1 9.8644565493170255e-1 4.7683715820312500e-7
71	assert_true: expected true got false
72	FAIL < [2-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false
73	PASS > [3-channel input] 3->2 downmix producing 2-channel output	25	PASS > [3-channel input] 3->2 downmix producing 2-channel output
74	FAIL X 3: Channel 0 does not equal [0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248,-0.8348914980888367...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.	26	FAIL X 3: Channel 0 does not equal [0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248,-0.8348914980888367...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
75	Index Actual Expected AbsError RelError Test threshold	27	Index Actual Expected AbsError RelError Test threshold
76	[2] 1.2856653891503811e-2 9.4852632284164429e-1 9.3566966895014048e-1 9.8644565408265406e-1 4.7683715820312500e-7	28	[2] 0.0000000000000000e+0 9.4852632284164429e-1 9.4852632284164429e-1 1.0000000000000000e+0 4.7683715820312500e-7
77	[3] 1.1483675800263882e-2 8.4723204374313354e-1 8.3574836794286966e-1 9.8644565454638833e-1 4.7683715820312500e-7	29	[3] 0.0000000000000000e+0 8.4723204374313354e-1 8.4723204374313354e-1 1.0000000000000000e+0 4.7683715820312500e-7
78	[4] 1.1160055175423622e-2 8.2335621118545532e-1 8.1219615601003170e-1 9.8644565374765858e-1 4.7683715820312500e-7	30	[4] 0.0000000000000000e+0 8.2335621118545532e-1 8.2335621118545532e-1 1.0000000000000000e+0 4.7683715820312500e-7
79	[5] 1.1718356981873512e-2 8.6454612016677856e-1 8.5282776318490505e-1 9.8644565430515962e-1 4.7683715820312500e-7	31	[5] 0.0000000000000000e+0 8.6454612016677856e-1 8.6454612016677856e-1 1.0000000000000000e+0 4.7683715820312500e-7
80	[6] 1.1459184810519218e-2 8.4542512893676758e-1 8.3396594412624836e-1 9.8644565388666572e-1 4.7683715820312500e-7	32	[6] 0.0000000000000000e+0 8.4542512893676758e-1 8.4542512893676758e-1 1.0000000000000000e+0 4.7683715820312500e-7
81	...and 1271 more errors.	33	...and 1271 more errors.
82	Max AbsError of 9.7670867852866650e-1 at index of 235.	34	Max AbsError of 9.9012923240661621e-1 at index of 235.
83	[235] -1.3420553877949715e-2 -9.9012923240661621e-1 9.7670867852866650e-1 9.8644565432602205e-1 4.7683715820312500e-7	35	[235] 0.0000000000000000e+0 -9.9012923240661621e-1 9.9012923240661621e-1 1.0000000000000000e+0 4.7683715820312500e-7
84	Max RelError of 9.8644565493170255e-1 at index of 196.	36	Max RelError of 1.0000000000000000e+0 at index of 2.
85	[196] 8.1549119204282761e-3 6.0164558887481689e-1 5.9349067695438862e-1 9.8644565493170255e-1 4.7683715820312500e-7
86	assert_true: expected true got false	37	assert_true: expected true got false
87	FAIL X 3: Channel 1 does not equal [0,0,0,0.9947001934051514,0.770577609539032,0.9109301567077637,0.7706682085990906,0.9842367172241211,0.3202291429042816,-0.9348859190940857,-0.8055058121681213,-0.8837443590164185,-0.8007677793502808,-0.9286618232727051,-0.6026888489723206,0.7909701466560364...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.	38	FAIL X 3: Channel 1 does not equal [0,0,0,0.9947001934051514,0.770577609539032,0.9109301567077637,0.7706682085990906,0.9842367172241211,0.3202291429042816,-0.9348859190940857,-0.8055058121681213,-0.8837443590164185,-0.8007677793502808,-0.9286618232727051,-0.6026888489723206,0.7909701466560364...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
88	Index Actual Expected AbsError RelError Test threshold	39	Index Actual Expected AbsError RelError Test threshold
89	[3] 1.3482510112226009e-2 9.9470019340515137e-1 9.8121768329292536e-1 9.8644565447798760e-1 4.7683715820312500e-7	40	[3] 0.0000000000000000e+0 9.9470019340515137e-1 9.9470019340515137e-1 1.0000000000000000e+0 4.7683715820312500e-7
90	[4] 1.0444675572216511e-2 7.7057760953903198e-1 7.6013293396681547e-1 9.8644565395760120e-1 4.7683715820312500e-7	41	[4] 0.0000000000000000e+0 7.7057760953903198e-1 7.7057760953903198e-1 1.0000000000000000e+0 4.7683715820312500e-7
91	[5] 1.2347062118351460e-2 9.1093015670776367e-1 8.9858309458941221e-1 9.8644565444734467e-1 4.7683715820312500e-7	42	[5] 0.0000000000000000e+0 9.1093015670776367e-1 9.1093015670776367e-1 1.0000000000000000e+0 4.7683715820312500e-7
92	[6] 1.0445903055369854e-2 7.7066820859909058e-1 7.6022230554372072e-1 9.8644565464253642e-1 4.7683715820312500e-7	43	[6] 0.0000000000000000e+0 7.7066820859909058e-1 7.7066820859909058e-1 1.0000000000000000e+0 4.7683715820312500e-7
93	[7] 1.3340684585273266e-2 9.8423671722412109e-1 9.7089603263884783e-1 9.8644565443270749e-1 4.7683715820312500e-7	44	[7] 0.0000000000000000e+0 9.8423671722412109e-1 9.8423671722412109e-1 1.0000000000000000e+0 4.7683715820312500e-7
94	...and 1271 more errors.	45	...and 1271 more errors.
95	Max AbsError of 9.8443668708205223e-1 at index of 274.	46	Max AbsError of 9.9796342849731445e-1 at index of 274.
96	[274] -1.3526741415262222e-2 -9.9796342849731445e-1 9.8443668708205223e-1 9.8644565419032426e-1 4.7683715820312500e-7	47	[274] 0.0000000000000000e+0 -9.9796342849731445e-1 9.9796342849731445e-1 1.0000000000000000e+0 4.7683715820312500e-7
97	Max RelError of 9.8644565485846292e-1 at index of 350.	48	Max RelError of 1.0000000000000000e+0 at index of 3.
98	[350] 8.9482078328728676e-3 6.6017264127731323e-1 6.5122443344444036e-1 9.8644565485846292e-1 4.7683715820312500e-7
99	assert_true: expected true got false	49	assert_true: expected true got false
100	FAIL < [3-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false	50	FAIL < [3-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false
101	PASS > [4-channel input] 4->2 downmix producing 2-channel output	51	PASS > [4-channel input] 4->2 downmix producing 2-channel output
102	FAIL X 4: Channel 0 does not equal [0,0,0.9734256267547607,0.8085750341415405,0.8596615791320801,0.8377397060394287,0.18206259608268738,-0.06961163878440857,0.037733376026153564,-0.007562130689620972,-0.018085792660713196,0.029709041118621826,-0.02168998122215271,-0.005516946315765381,0.05647379159927368,-0.4439384341239929...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.	52	FAIL X 4: Channel 0 does not equal [0,0,0.9734256267547607,0.8085750341415405,0.8596615791320801,0.8377397060394287,0.18206259608268738,-0.06961163878440857,0.037733376026153564,-0.007562130689620972,-0.018085792660713196,0.029709041118621826,-0.02168998122215271,-0.005516946315765381,0.05647379159927368,-0.4439384341239929...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
103	Index Actual Expected AbsError RelError Test threshold	53	Index Actual Expected AbsError RelError Test threshold
104	[2] 1.3194147497415543e-2 9.7342562675476074e-1 9.6023147925734520e-1 9.8644565425978903e-1 4.7683715820312500e-7	54	[2] 0.0000000000000000e+0 9.7342562675476074e-1 9.7342562675476074e-1 1.0000000000000000e+0 4.7683715820312500e-7
105	[3] 1.0959705337882042e-2 8.0857503414154053e-1 7.9761532880365849e-1 9.8644565454643562e-1 4.7683715820312500e-7	55	[3] 0.0000000000000000e+0 8.0857503414154053e-1 8.0857503414154053e-1 1.0000000000000000e+0 4.7683715820312500e-7
106	[4] 1.1652150191366673e-2 8.5966157913208008e-1 8.4800942894071341e-1 9.8644565434326992e-1 4.7683715820312500e-7	56	[4] 0.0000000000000000e+0 8.5966157913208008e-1 8.5966157913208008e-1 1.0000000000000000e+0 4.7683715820312500e-7
107	[5] 1.1355013586580753e-2 8.3773970603942871e-1 8.2638469245284796e-1 9.8644565429485997e-1 4.7683715820312500e-7	57	[5] 0.0000000000000000e+0 8.3773970603942871e-1 8.3773970603942871e-1 1.0000000000000000e+0 4.7683715820312500e-7
108	[6] 2.4677393957972527e-3 1.8206259608268738e-1 1.7959485668689013e-1 9.8644565413822571e-1 4.7683715820312500e-7	58	[6] 0.0000000000000000e+0 1.8206259608268738e-1 1.8206259608268738e-1 1.0000000000000000e+0 4.7683715820312500e-7
109	...and 1271 more errors.	59	...and 1271 more errors.
110	Max AbsError of 9.8887207824736834e-1 at index of 428.	60	Max AbsError of 1.0024597644805908e+0 at index of 428.
111	[428] -1.3587686233222485e-2 -1.0024597644805908e+0 9.8887207824736834e-1 9.8644565426497421e-1 4.7683715820312500e-7	61	[428] 0.0000000000000000e+0 -1.0024597644805908e+0 1.0024597644805908e+0 1.0000000000000000e+0 4.7683715820312500e-7
112	Max RelError of 9.8644565496724246e-1 at index of 193.	62	Max RelError of 1.0000000000000000e+0 at index of 2.
113	[193] -9.9873158615082502e-4 -7.3683500289916992e-2 7.2684768703766167e-2 9.8644565496724246e-1 4.7683715820312500e-7
114	assert_true: expected true got false	63	assert_true: expected true got false
115	FAIL X 4: Channel 1 does not equal [0,0,0,0.971980094909668,0.8049001097679138,0.8850501775741577,0.18059252202510834,0.027723312377929688,-0.2852807641029358,-0.7788606882095337,-0.03758403658866882,-0.008258670568466187,0.07240843772888184,-0.33466455340385437,-0.7563190460205078,-0.020491331815719604...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.	64	FAIL X 4: Channel 1 does not equal [0,0,0,0.971980094909668,0.8049001097679138,0.8850501775741577,0.18059252202510834,0.027723312377929688,-0.2852807641029358,-0.7788606882095337,-0.03758403658866882,-0.008258670568466187,0.07240843772888184,-0.33466455340385437,-0.7563190460205078,-0.020491331815719604...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
116	Index Actual Expected AbsError RelError Test threshold	65	Index Actual Expected AbsError RelError Test threshold
117	[3] 1.3174554333090782e-2 9.7198009490966797e-1 9.5880554057657719e-1 9.8644565418357133e-1 4.7683715820312500e-7	66	[3] 0.0000000000000000e+0 9.7198009490966797e-1 9.7198009490966797e-1 1.0000000000000000e+0 4.7683715820312500e-7
118	[4] 1.0909894481301308e-2 8.0490010976791382e-1 7.9399021528661251e-1 9.8644565412663809e-1 4.7683715820312500e-7	67	[4] 0.0000000000000000e+0 8.0490010976791382e-1 8.0490010976791382e-1 1.0000000000000000e+0 4.7683715820312500e-7
119	[5] 1.1996275745332241e-2 8.8505017757415771e-1 8.7305390182882547e-1 9.8644565466535139e-1 4.7683715820312500e-7	68	[5] 0.0000000000000000e+0 8.8505017757415771e-1 8.8505017757415771e-1 1.0000000000000000e+0 4.7683715820312500e-7
120	[6] 2.4478135164827108e-3 1.8059252202510834e-1 1.7814470850862563e-1 9.8644565406677032e-1 4.7683715820312500e-7	69	[6] 0.0000000000000000e+0 1.8059252202510834e-1 1.8059252202510834e-1 1.0000000000000000e+0 4.7683715820312500e-7
121	[7] 3.7577137118205428e-4 2.7723312377929688e-2 2.7347541006747633e-2 9.8644565389375327e-1 4.7683715820312500e-7	70	[7] 0.0000000000000000e+0 2.7723312377929688e-2 2.7723312377929688e-2 1.0000000000000000e+0 4.7683715820312500e-7
122	...and 1271 more errors.	71	...and 1271 more errors.
123	Max AbsError of 9.6179059240967035e-1 at index of 485.	72	Max AbsError of 9.7500616312026978e-1 at index of 485.
124	[485] -1.3215570710599422e-2 -9.7500616312026978e-1 9.6179059240967035e-1 9.8644565418098873e-1 4.7683715820312500e-7	73	[485] 0.0000000000000000e+0 -9.7500616312026978e-1 9.7500616312026978e-1 1.0000000000000000e+0 4.7683715820312500e-7
125	Max RelError of 9.8644565494492031e-1 at index of 125.	74	Max RelError of 1.0000000000000000e+0 at index of 3.
126	[125] -7.9908343032002449e-3 -5.8954042196273804e-1 5.8154958765953779e-1 9.8644565494492031e-1 4.7683715820312500e-7
127	assert_true: expected true got false	75	assert_true: expected true got false
128	FAIL < [4-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false	76	FAIL < [4-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false
129	PASS > [5.1-channel input] 5.1->2 downmix producing 2-channel output	77	PASS > [5.1-channel input] 5.1->2 downmix producing 2-channel output
130	FAIL X 5.1: Channel 0 does not equal [0,0,2.302107334136963,2.0779101848602295,1.536412000656128,0.8359496593475342,-0.2123139351606369,-0.0052925655618309975,0.8362105488777161,1.0198440551757812,0.32619065046310425,-0.6783384680747986,-1.0576409101486206,-0.5491995811462402,0.2516634166240692,-0.10923532396554947...] with an element-wise tolerance of {"absoluteThreshold":0.0000011511867343774294,"relativeThreshold":0}.	78	FAIL X 5.1: Channel 0 does not equal [0,0,2.302107334136963,2.0779101848602295,1.536412000656128,0.8359496593475342,-0.2123139351606369,-0.0052925655618309975,0.8362105488777161,1.0198440551757812,0.32619065046310425,-0.6783384680747986,-1.0576409101486206,-0.5491995811462402,0.2516634166240692,-0.10923532396554947...] with an element-wise tolerance of {"absoluteThreshold":0.0000011511867343774294,"relativeThreshold":0}.
131	Index Actual Expected AbsError RelError Test threshold	79	Index Actual Expected AbsError RelError Test threshold
132	[2] 3.1203558668494225e-2 2.3021073341369629e+0 2.2709037754684687e+0 9.8644565428996722e-1 1.1511867343774294e-6	80	[2] 0.0000000000000000e+0 2.3021073341369629e+0 2.3021073341369629e+0 1.0000000000000000e+0 1.1511867343774294e-6
133	[3] 2.8164712712168694e-2 2.0779101848602295e+0 2.0497454721480608e+0 9.8644565442848375e-1 1.1511867343774294e-6	81	[3] 0.0000000000000000e+0 2.0779101848602295e+0 2.0779101848602295e+0 1.0000000000000000e+0 1.1511867343774294e-6
134	[4] 2.0825060084462166e-2 1.5364120006561279e+0 1.5155869405716658e+0 9.8644565385094052e-1 1.1511867343774294e-6	82	[4] 0.0000000000000000e+0 1.5364120006561279e+0 1.5364120006561279e+0 1.0000000000000000e+0 1.1511867343774294e-6
135	[5] 1.1330750770866871e-2 8.3594965934753418e-1 8.2461890857666731e-1 9.8644565418004881e-1 1.1511867343774294e-6	83	[5] 0.0000000000000000e+0 8.3594965934753418e-1 8.3594965934753418e-1 1.0000000000000000e+0 1.1511867343774294e-6
136	[6] -2.8777765110135078e-3 -2.1231393516063690e-1 2.0943615864962339e-1 9.8644565412611196e-1 1.1511867343774294e-6	84	[6] 0.0000000000000000e+0 -2.1231393516063690e-1 2.1231393516063690e-1 1.0000000000000000e+0 1.1511867343774294e-6
137	...and 1271 more errors.	85	...and 1271 more errors.
138	Max AbsError of 2.4073597267270088e+0 at index of 896.	86	Max AbsError of 2.4404382705688477e+0 at index of 896.
139	[896] 3.3078543841838837e-2 2.4404382705688477e+0 2.4073597267270088e+0 9.8644565435612164e-1 1.1511867343774294e-6	87	[896] 0.0000000000000000e+0 2.4404382705688477e+0 2.4404382705688477e+0 1.0000000000000000e+0 1.1511867343774294e-6
140	Max RelError of 9.8644565493963665e-1 at index of 565.	88	Max RelError of 1.0000000000000000e+0 at index of 2.
141	[565] -4.0895724669098854e-3 -3.0171671509742737e-1 2.9762714263051748e-1 9.8644565493963665e-1 1.1511867343774294e-6
142	assert_true: expected true got false	89	assert_true: expected true got false
143	FAIL X 5.1: Channel 1 does not equal [0,0,0,2.407027244567871,1.851643443107605,1.2457610368728638,0.5805020928382874,0.3625302314758301,0.1648862212896347,-0.7450207471847534,-1.5345407724380493,-1.904326319694519,-0.7297847867012024,0.01058983150869608,0.7125816941261292,1.75357985496521...] with an element-wise tolerance of {"absoluteThreshold":0.0000011511867343774294,"relativeThreshold":0}.	90	FAIL X 5.1: Channel 1 does not equal [0,0,0,2.407027244567871,1.851643443107605,1.2457610368728638,0.5805020928382874,0.3625302314758301,0.1648862212896347,-0.7450207471847534,-1.5345407724380493,-1.904326319694519,-0.7297847867012024,0.01058983150869608,0.7125816941261292,1.75357985496521...] with an element-wise tolerance of {"absoluteThreshold":0.0000011511867343774294,"relativeThreshold":0}.
144	Index Actual Expected AbsError RelError Test threshold	91	Index Actual Expected AbsError RelError Test threshold
145	[3] 3.2625678926706314e-2 2.4070272445678711e+0 2.3744015656411648e+0 9.8644565448923138e-1 1.1511867343774294e-6	92	[3] 0.0000000000000000e+0 2.4070272445678711e+0 2.4070272445678711e+0 1.0000000000000000e+0 1.1511867343774294e-6
146	[4] 2.5097815319895744e-2 1.8516434431076050e+0 1.8265456277877092e+0 9.8644565431140774e-1 1.1511867343774294e-6	93	[4] 0.0000000000000000e+0 1.8516434431076050e+0 1.8516434431076050e+0 1.0000000000000000e+0 1.1511867343774294e-6
147	[5] 1.6885476186871529e-2 1.2457610368728638e+0 1.2288755606859922e+0 9.8644565395201489e-1 1.1511867343774294e-6	94	[5] 0.0000000000000000e+0 1.2457610368728638e+0 1.2457610368728638e+0 1.0000000000000000e+0 1.1511867343774294e-6
148	[6] 7.8683262690901756e-3 5.8050209283828735e-1 5.7263376656919718e-1 9.8644565391552841e-1 1.1511867343774294e-6	95	[6] 0.0000000000000000e+0 5.8050209283828735e-1 5.8050209283828735e-1 1.0000000000000000e+0 1.1511867343774294e-6
149	[7] 4.9138600006699562e-3 3.6253023147583008e-1 3.5761637147516012e-1 9.8644565453020006e-1 1.1511867343774294e-6	96	[7] 0.0000000000000000e+0 3.6253023147583008e-1 3.6253023147583008e-1 1.0000000000000000e+0 1.1511867343774294e-6
150	...and 1271 more errors.	97	...and 1271 more errors.
151	Max AbsError of 2.4268193319439888e+0 at index of 187.	98	Max AbsError of 2.4601652622222900e+0 at index of 187.
152	[187] -3.3345930278301239e-2 -2.4601652622222900e+0 2.4268193319439888e+0 9.8644565436706488e-1 1.1511867343774294e-6	99	[187] 0.0000000000000000e+0 -2.4601652622222900e+0 2.4601652622222900e+0 1.0000000000000000e+0 1.1511867343774294e-6
153	Max RelError of 9.8644565494113301e-1 at index of 629.	100	Max RelError of 1.0000000000000000e+0 at index of 3.
154	[629] -2.0575642120093107e-3 -1.5180107951164246e-1 1.4974351529963315e-1 9.8644565494113301e-1 1.1511867343774294e-6
155	assert_true: expected true got false	101	assert_true: expected true got false
156	FAIL < [5.1-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false	102	FAIL < [5.1-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false
157	PASS > [2-channel input, explicit mode] produces 2-channel output	103	PASS > [2-channel input, explicit mode] produces 2-channel output
158	FAIL X 2-in explicit mode: Channel 0 does not equal [0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248,-0.8348914980888367...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.	104	FAIL X 2-in explicit mode: Channel 0 does not equal [0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248,-0.8348914980888367...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
159	Index Actual Expected AbsError RelError Test threshold	105	Index Actual Expected AbsError RelError Test threshold
160	[2] 1.2856653891503811e-2 9.4852632284164429e-1 9.3566966895014048e-1 9.8644565408265406e-1 4.7683715820312500e-7	106	[2] 0.0000000000000000e+0 9.4852632284164429e-1 9.4852632284164429e-1 1.0000000000000000e+0 4.7683715820312500e-7
161	[3] 1.1483675800263882e-2 8.4723204374313354e-1 8.3574836794286966e-1 9.8644565454638833e-1 4.7683715820312500e-7	107	[3] 0.0000000000000000e+0 8.4723204374313354e-1 8.4723204374313354e-1 1.0000000000000000e+0 4.7683715820312500e-7
162	[4] 1.1160055175423622e-2 8.2335621118545532e-1 8.1219615601003170e-1 9.8644565374765858e-1 4.7683715820312500e-7	108	[4] 0.0000000000000000e+0 8.2335621118545532e-1 8.2335621118545532e-1 1.0000000000000000e+0 4.7683715820312500e-7
163	[5] 1.1718356981873512e-2 8.6454612016677856e-1 8.5282776318490505e-1 9.8644565430515962e-1 4.7683715820312500e-7	109	[5] 0.0000000000000000e+0 8.6454612016677856e-1 8.6454612016677856e-1 1.0000000000000000e+0 4.7683715820312500e-7
164	[6] 1.1459184810519218e-2 8.4542512893676758e-1 8.3396594412624836e-1 9.8644565388666572e-1 4.7683715820312500e-7	110	[6] 0.0000000000000000e+0 8.4542512893676758e-1 8.4542512893676758e-1 1.0000000000000000e+0 4.7683715820312500e-7
165	...and 1271 more errors.	111	...and 1271 more errors.
166	Max AbsError of 9.7670867852866650e-1 at index of 235.	112	Max AbsError of 9.9012923240661621e-1 at index of 235.
167	[235] -1.3420553877949715e-2 -9.9012923240661621e-1 9.7670867852866650e-1 9.8644565432602205e-1 4.7683715820312500e-7	113	[235] 0.0000000000000000e+0 -9.9012923240661621e-1 9.9012923240661621e-1 1.0000000000000000e+0 4.7683715820312500e-7
168	Max RelError of 9.8644565493170255e-1 at index of 196.	114	Max RelError of 1.0000000000000000e+0 at index of 2.
169	[196] 8.1549119204282761e-3 6.0164558887481689e-1 5.9349067695438862e-1 9.8644565493170255e-1 4.7683715820312500e-7
170	assert_true: expected true got false	115	assert_true: expected true got false
171	FAIL X 2-in explicit mode: Channel 1 does not equal [0,0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.	116	FAIL X 2-in explicit mode: Channel 1 does not equal [0,0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
172	Index Actual Expected AbsError RelError Test threshold	117	Index Actual Expected AbsError RelError Test threshold
173	[3] 1.2856653891503811e-2 9.4852632284164429e-1 9.3566966895014048e-1 9.8644565408265406e-1 4.7683715820312500e-7	118	[3] 0.0000000000000000e+0 9.4852632284164429e-1 9.4852632284164429e-1 1.0000000000000000e+0 4.7683715820312500e-7
174	[4] 1.1483675800263882e-2 8.4723204374313354e-1 8.3574836794286966e-1 9.8644565454638833e-1 4.7683715820312500e-7	119	[4] 0.0000000000000000e+0 8.4723204374313354e-1 8.4723204374313354e-1 1.0000000000000000e+0 4.7683715820312500e-7
175	[5] 1.1160055175423622e-2 8.2335621118545532e-1 8.1219615601003170e-1 9.8644565374765858e-1 4.7683715820312500e-7	120	[5] 0.0000000000000000e+0 8.2335621118545532e-1 8.2335621118545532e-1 1.0000000000000000e+0 4.7683715820312500e-7
176	[6] 1.1718356981873512e-2 8.6454612016677856e-1 8.5282776318490505e-1 9.8644565430515962e-1 4.7683715820312500e-7	121	[6] 0.0000000000000000e+0 8.6454612016677856e-1 8.6454612016677856e-1 1.0000000000000000e+0 4.7683715820312500e-7
177	[7] 1.1459184810519218e-2 8.4542512893676758e-1 8.3396594412624836e-1 9.8644565388666572e-1 4.7683715820312500e-7	122	[7] 0.0000000000000000e+0 8.4542512893676758e-1 8.4542512893676758e-1 1.0000000000000000e+0 4.7683715820312500e-7
178	...and 1270 more errors.	123	...and 1270 more errors.
179	Max AbsError of 9.7670867852866650e-1 at index of 236.	124	Max AbsError of 9.9012923240661621e-1 at index of 236.
180	[236] -1.3420553877949715e-2 -9.9012923240661621e-1 9.7670867852866650e-1 9.8644565432602205e-1 4.7683715820312500e-7	125	[236] 0.0000000000000000e+0 -9.9012923240661621e-1 9.9012923240661621e-1 1.0000000000000000e+0 4.7683715820312500e-7
181	Max RelError of 9.8644565493170255e-1 at index of 197.	126	Max RelError of 1.0000000000000000e+0 at index of 3.
182	[197] 8.1549119204282761e-3 6.0164558887481689e-1 5.9349067695438862e-1 9.8644565493170255e-1 4.7683715820312500e-7
183	assert_true: expected true got false	127	assert_true: expected true got false
184	FAIL < [2-channel input, explicit mode] 2 out of 2 assertions were failed. assert_true: expected true got false	128	FAIL < [2-channel input, explicit mode] 2 out of 2 assertions were failed. assert_true: expected true got false
185	PASS > [3-channel input explicit mode] 3->1 downmix producing 2-channel output	129	PASS > [3-channel input explicit mode] 3->1 downmix producing 2-channel output
186	FAIL X 3-in explicit: Channel 0 does not equal [0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248,-0.8348914980888367...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.	130	FAIL X 3-in explicit: Channel 0 does not equal [0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248,-0.8348914980888367...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
187	Index Actual Expected AbsError RelError Test threshold	131	Index Actual Expected AbsError RelError Test threshold
188	[2] 1.2856653891503811e-2 9.4852632284164429e-1 9.3566966895014048e-1 9.8644565408265406e-1 4.7683715820312500e-7	132	[2] 0.0000000000000000e+0 9.4852632284164429e-1 9.4852632284164429e-1 1.0000000000000000e+0 4.7683715820312500e-7
189	[3] 1.1483675800263882e-2 8.4723204374313354e-1 8.3574836794286966e-1 9.8644565454638833e-1 4.7683715820312500e-7	133	[3] 0.0000000000000000e+0 8.4723204374313354e-1 8.4723204374313354e-1 1.0000000000000000e+0 4.7683715820312500e-7
190	[4] 1.1160055175423622e-2 8.2335621118545532e-1 8.1219615601003170e-1 9.8644565374765858e-1 4.7683715820312500e-7	134	[4] 0.0000000000000000e+0 8.2335621118545532e-1 8.2335621118545532e-1 1.0000000000000000e+0 4.7683715820312500e-7
191	[5] 1.1718356981873512e-2 8.6454612016677856e-1 8.5282776318490505e-1 9.8644565430515962e-1 4.7683715820312500e-7	135	[5] 0.0000000000000000e+0 8.6454612016677856e-1 8.6454612016677856e-1 1.0000000000000000e+0 4.7683715820312500e-7
192	[6] 1.1459184810519218e-2 8.4542512893676758e-1 8.3396594412624836e-1 9.8644565388666572e-1 4.7683715820312500e-7	136	[6] 0.0000000000000000e+0 8.4542512893676758e-1 8.4542512893676758e-1 1.0000000000000000e+0 4.7683715820312500e-7
193	...and 1271 more errors.	137	...and 1271 more errors.
194	Max AbsError of 9.7670867852866650e-1 at index of 235.	138	Max AbsError of 9.9012923240661621e-1 at index of 235.
195	[235] -1.3420553877949715e-2 -9.9012923240661621e-1 9.7670867852866650e-1 9.8644565432602205e-1 4.7683715820312500e-7	139	[235] 0.0000000000000000e+0 -9.9012923240661621e-1 9.9012923240661621e-1 1.0000000000000000e+0 4.7683715820312500e-7
196	Max RelError of 9.8644565493170255e-1 at index of 196.	140	Max RelError of 1.0000000000000000e+0 at index of 2.
197	[196] 8.1549119204282761e-3 6.0164558887481689e-1 5.9349067695438862e-1 9.8644565493170255e-1 4.7683715820312500e-7
198	assert_true: expected true got false	141	assert_true: expected true got false
199	FAIL X 3-in explicit: Channel 1 does not equal [0,0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.	142	FAIL X 3-in explicit: Channel 1 does not equal [0,0,0,0.9485263228416443,0.8472320437431335,0.8233562111854553,0.8645461201667786,0.8454251289367676,0.858031690120697,0.7955960035324097,0.9893835186958313,0.39837583899497986,-0.7808233499526978,-0.9249736070632935,-0.7918891906738281,-0.875220775604248...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
200	Index Actual Expected AbsError RelError Test threshold	143	Index Actual Expected AbsError RelError Test threshold
201	[3] 1.2856653891503811e-2 9.4852632284164429e-1 9.3566966895014048e-1 9.8644565408265406e-1 4.7683715820312500e-7	144	[3] 0.0000000000000000e+0 9.4852632284164429e-1 9.4852632284164429e-1 1.0000000000000000e+0 4.7683715820312500e-7
202	[4] 1.1483675800263882e-2 8.4723204374313354e-1 8.3574836794286966e-1 9.8644565454638833e-1 4.7683715820312500e-7	145	[4] 0.0000000000000000e+0 8.4723204374313354e-1 8.4723204374313354e-1 1.0000000000000000e+0 4.7683715820312500e-7
203	[5] 1.1160055175423622e-2 8.2335621118545532e-1 8.1219615601003170e-1 9.8644565374765858e-1 4.7683715820312500e-7	146	[5] 0.0000000000000000e+0 8.2335621118545532e-1 8.2335621118545532e-1 1.0000000000000000e+0 4.7683715820312500e-7
204	[6] 1.1718356981873512e-2 8.6454612016677856e-1 8.5282776318490505e-1 9.8644565430515962e-1 4.7683715820312500e-7	147	[6] 0.0000000000000000e+0 8.6454612016677856e-1 8.6454612016677856e-1 1.0000000000000000e+0 4.7683715820312500e-7
205	[7] 1.1459184810519218e-2 8.4542512893676758e-1 8.3396594412624836e-1 9.8644565388666572e-1 4.7683715820312500e-7	148	[7] 0.0000000000000000e+0 8.4542512893676758e-1 8.4542512893676758e-1 1.0000000000000000e+0 4.7683715820312500e-7
206	...and 1270 more errors.	149	...and 1270 more errors.
207	Max AbsError of 9.7670867852866650e-1 at index of 236.	150	Max AbsError of 9.9012923240661621e-1 at index of 236.
208	[236] -1.3420553877949715e-2 -9.9012923240661621e-1 9.7670867852866650e-1 9.8644565432602205e-1 4.7683715820312500e-7	151	[236] 0.0000000000000000e+0 -9.9012923240661621e-1 9.9012923240661621e-1 1.0000000000000000e+0 4.7683715820312500e-7
209	Max RelError of 9.8644565493170255e-1 at index of 197.	152	Max RelError of 1.0000000000000000e+0 at index of 3.
210	[197] 8.1549119204282761e-3 6.0164558887481689e-1 5.9349067695438862e-1 9.8644565493170255e-1 4.7683715820312500e-7
211	assert_true: expected true got false	153	assert_true: expected true got false
212	FAIL < [3-channel input explicit mode] 2 out of 2 assertions were failed. assert_true: expected true got false	154	FAIL < [3-channel input explicit mode] 2 out of 2 assertions were failed. assert_true: expected true got false
213	PASS > [4-channel input explicit mode] 4->1 downmix producing 2-channel output	155	PASS > [4-channel input explicit mode] 4->1 downmix producing 2-channel output
214	FAIL X 4-in explicit: Channel 0 does not equal [0,0,0.9727029204368591,0.8067376017570496,0.8723558783531189,0.5091661214828491,0.10489296913146973,-0.17744621634483337,-0.37056368589401245,-0.022573083639144897,-0.013172224164009094,0.05105873942375183,-0.17817726731300354,-0.3809179663658142,0.01799122989177704,-0.23770247399806976...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.	156	PASS 4-in explicit: Channel 0 equals [0,0,0.9727029204368591,0.8067376017570496,0.8723558783531189,0.5091661214828491,0.10489296913146973,-0.17744621634483337,-0.37056368589401245,-0.022573083639144897,-0.013172224164009094,0.05105873942375183,-0.17817726731300354,-0.3809179663658142,0.01799122989177704,-0.23770247399806976...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
215	Index Actual Expected AbsError RelError Test threshold	157	PASS 4-in explicit: Channel 1 equals [0,0,0,0.9727029204368591,0.8067376017570496,0.8723558783531189,0.5091661214828491,0.10489296913146973,-0.17744621634483337,-0.37056368589401245,-0.022573083639144897,-0.013172224164009094,0.05105873942375183,-0.17817726731300354,-0.3809179663658142,0.01799122989177704...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
216	[2] 1.3184351846575737e-2 9.7270292043685913e-1 9.5951856859028339e-1 9.8644565409482432e-1 4.7683715820312500e-7	158	PASS < [4-channel input explicit mode] All assertions passed. (total 2 assertions)
217	[3] 1.0934800840914249e-2 8.0673760175704956e-1 7.9580280091613531e-1 9.8644565368330595e-1 4.7683715820312500e-7
218	[4] 1.1824212968349457e-2 8.7235587835311890e-1 8.6053166538476944e-1 9.8644565450665400e-1 4.7683715820312500e-7
219	[5] 6.9014136679470539e-3 5.0916612148284912e-1 5.0226470781490207e-1 9.8644565422411057e-1 4.7683715820312500e-7
220	[6] 1.4217555290088058e-3 1.0489296913146973e-1 1.0347121360246092e-1 9.8644565464414669e-1 4.7683715820312500e-7
221	...and 1272 more errors.
222	Max AbsError of 9.7197636403143406e-1 at index of 968.
223	[968] -1.3355528935790062e-2 -9.8533189296722412e-1 9.7197636403143406e-1 9.8644565447326460e-1 4.7683715820312500e-7
224	Max RelError of 9.8644565493995662e-1 at index of 1150.
225	[1150] -5.1431218162178993e-4 -3.7944450974464417e-2 3.7430138792842627e-2 9.8644565493995662e-1 4.7683715820312500e-7
226	assert_true: expected true got false
227	FAIL X 4-in explicit: Channel 1 does not equal [0,0,0,0.9727029204368591,0.8067376017570496,0.8723558783531189,0.5091661214828491,0.10489296913146973,-0.17744621634483337,-0.37056368589401245,-0.022573083639144897,-0.013172224164009094,0.05105873942375183,-0.17817726731300354,-0.3809179663658142,0.01799122989177704...] with an element-wise tolerance of {"absoluteThreshold":4.76837158203125e-7,"relativeThreshold":0}.
228	Index Actual Expected AbsError RelError Test threshold
229	[3] 1.3184351846575737e-2 9.7270292043685913e-1 9.5951856859028339e-1 9.8644565409482432e-1 4.7683715820312500e-7
230	[4] 1.0934800840914249e-2 8.0673760175704956e-1 7.9580280091613531e-1 9.8644565368330595e-1 4.7683715820312500e-7
231	[5] 1.1824212968349457e-2 8.7235587835311890e-1 8.6053166538476944e-1 9.8644565450665400e-1 4.7683715820312500e-7
232	[6] 6.9014136679470539e-3 5.0916612148284912e-1 5.0226470781490207e-1 9.8644565422411057e-1 4.7683715820312500e-7
233	[7] 1.4217555290088058e-3 1.0489296913146973e-1 1.0347121360246092e-1 9.8644565464414669e-1 4.7683715820312500e-7
234	...and 1271 more errors.
235	Max AbsError of 9.7197636403143406e-1 at index of 969.
236	[969] -1.3355528935790062e-2 -9.8533189296722412e-1 9.7197636403143406e-1 9.8644565447326460e-1 4.7683715820312500e-7
237	Max RelError of 9.8644565493995662e-1 at index of 1151.
238	[1151] -5.1431218162178993e-4 -3.7944450974464417e-2 3.7430138792842627e-2 9.8644565493995662e-1 4.7683715820312500e-7
239	assert_true: expected true got false
240	FAIL < [4-channel input explicit mode] 2 out of 2 assertions were failed. assert_true: expected true got false
241	PASS > [5.1-channel input explicit mode] 5.1->1 downmix producing 2-channel output	159	PASS > [5.1-channel input explicit mode] 5.1->1 downmix producing 2-channel output
242	FAIL X 5.1-in explicit: Channel 0 does not equal [0,0,3.3298611640930176,2.778614044189453,1.967293381690979,1.0015825033187866,0.10621887445449829,0.11284977197647095,0.06448096036911011,-0.36394545435905457,-1.115910291671753,-0.9956934452056885,-0.740376889705658,0.1155286431312561,1.4179210662841797,0.11217048764228821...] with an element-wise tolerance of {"absoluteThreshold":0.0000016280238925805544,"relativeThreshold":0}.	160	PASS 5.1-in explicit: Channel 0 equals [0,0,3.3298611640930176,2.778614044189453,1.967293381690979,1.0015825033187866,0.10621887445449829,0.11284977197647095,0.06448096036911011,-0.36394545435905457,-1.115910291671753,-0.9956934452056885,-0.740376889705658,0.1155286431312561,1.4179210662841797,0.11217048764228821...] with an element-wise tolerance of {"absoluteThreshold":0.0000016280238925805544,"relativeThreshold":0}.
243	Index Actual Expected AbsError RelError Test threshold	161	PASS 5.1-in explicit: Channel 1 equals [0,0,0,3.3298611640930176,2.778614044189453,1.967293381690979,1.0015825033187866,0.10621887445449829,0.11284977197647095,0.06448096036911011,-0.36394545435905457,-1.115910291671753,-0.9956934452056885,-0.740376889705658,0.1155286431312561,1.4179210662841797...] with an element-wise tolerance of {"absoluteThreshold":0.0000016280238925805544,"relativeThreshold":0}.
244	[2] 4.5134089887142181e-2 3.3298611640930176e+0 3.2847270742058754e+0 9.8644565413902607e-1 1.6280238925805544e-6	162	PASS < [5.1-channel input explicit mode] All assertions passed. (total 2 assertions)
245	[3] 3.7662297487258911e-2 2.7786140441894531e+0 2.7409517467021942e+0 9.8644565352067626e-1 1.6280238925805544e-6	163	FAIL # AUDIT TASK RUNNER FINISHED: 5 out of 10 tasks were failed. assert_true: expected true got false
246	[4] 2.6665374636650085e-2 1.9672933816909790e+0 1.9406280070543289e+0 9.8644565427565767e-1 1.6280238925805544e-6
247	[5] 1.3575796037912369e-2 1.0015825033187866e+0 9.8800670728087425e-1 9.8644565375999638e-1 1.6280238925805544e-6
248	[6] 1.4397273771464825e-3 1.0621887445449829e-1 1.0477914707735181e-1 9.8644565399002393e-1 1.6280238925805544e-6
249	...and 1272 more errors.
250	Max AbsError of 3.4086129888892174e+0 at index of 37.
251	[37] -4.6836353838443756e-2 -3.4554493427276611e+0 3.4086129888892174e+0 9.8644565461883693e-1 1.6280238925805544e-6
252	Max RelError of 9.8644565497778591e-1 at index of 327.
253	[327] 1.5722304582595825e-2 1.1599457263946533e+0 1.1442234218120575e+0 9.8644565497778591e-1 1.6280238925805544e-6
254	assert_true: expected true got false
255	FAIL X 5.1-in explicit: Channel 1 does not equal [0,0,0,3.3298611640930176,2.778614044189453,1.967293381690979,1.0015825033187866,0.10621887445449829,0.11284977197647095,0.06448096036911011,-0.36394545435905457,-1.115910291671753,-0.9956934452056885,-0.740376889705658,0.1155286431312561,1.4179210662841797...] with an element-wise tolerance of {"absoluteThreshold":0.0000016280238925805544,"relativeThreshold":0}.
256	Index Actual Expected AbsError RelError Test threshold
257	[3] 4.5134089887142181e-2 3.3298611640930176e+0 3.2847270742058754e+0 9.8644565413902607e-1 1.6280238925805544e-6
258	[4] 3.7662297487258911e-2 2.7786140441894531e+0 2.7409517467021942e+0 9.8644565352067626e-1 1.6280238925805544e-6
259	[5] 2.6665374636650085e-2 1.9672933816909790e+0 1.9406280070543289e+0 9.8644565427565767e-1 1.6280238925805544e-6
260	[6] 1.3575796037912369e-2 1.0015825033187866e+0 9.8800670728087425e-1 9.8644565375999638e-1 1.6280238925805544e-6
261	[7] 1.4397273771464825e-3 1.0621887445449829e-1 1.0477914707735181e-1 9.8644565399002393e-1 1.6280238925805544e-6
262	...and 1271 more errors.
263	Max AbsError of 3.4086129888892174e+0 at index of 38.
264	[38] -4.6836353838443756e-2 -3.4554493427276611e+0 3.4086129888892174e+0 9.8644565461883693e-1 1.6280238925805544e-6
265	Max RelError of 9.8644565497778591e-1 at index of 328.
266	[328] 1.5722304582595825e-2 1.1599457263946533e+0 1.1442234218120575e+0 9.8644565497778591e-1 1.6280238925805544e-6
267	assert_true: expected true got false
268	FAIL < [5.1-channel input explicit mode] 2 out of 2 assertions were failed. assert_true: expected true got false
269	FAIL # AUDIT TASK RUNNER FINISHED: 9 out of 10 tasks were failed. assert_true: expected true got false
270		164

Lines 17-173 PASS < [initialize] All assertions passed. (total 1 assertions) a/LayoutTests/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-response-4-chan-expected.txt_sec1
- a/LayoutTests/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-response-4-chan-expected.txt -116 / +86 lines
17	PASS > [1-channel input] produces 2-channel output	17	PASS > [1-channel input] produces 2-channel output
18	FAIL X 1: Channel 0 does not equal [0,0,0.9485263228416443,0.8472320437431335,1.7718825340270996,1.711778163909912,1.6687812805175781,1.7225778102874756,1.6410211324691772,1.8474152088165283,1.193971872329712,0.20856016874313354,-0.5265977382659912,-1.5727125406265259,-1.8001943826675415,-1.6267807483673096...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.	18	FAIL X 1: Channel 0 does not equal [0,0,0.9485263228416443,0.8472320437431335,1.7718825340270996,1.711778163909912,1.6687812805175781,1.7225778102874756,1.6410211324691772,1.8474152088165283,1.193971872329712,0.20856016874313354,-0.5265977382659912,-1.5727125406265259,-1.8001943826675415,-1.6267807483673096...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.
19	Index Actual Expected AbsError RelError Test threshold	19	Index Actual Expected AbsError RelError Test threshold
20	[2] 9.0910261496901512e-3 9.4852632284164429e-1 9.3943529669195414e-1 9.9041563114194364e-1 7.1525573730468750e-7	20	[2] 0.0000000000000000e+0 9.4852632284164429e-1 9.4852632284164429e-1 1.0000000000000000e+0 7.1525573730468750e-7
21	[3] 8.1201847642660141e-3 8.4723204374313354e-1 8.3911185897886753e-1 9.9041563073040717e-1 7.1525573730468750e-7	21	[3] 0.0000000000000000e+0 8.4723204374313354e-1 8.4723204374313354e-1 1.0000000000000000e+0 7.1525573730468750e-7
22	[4] 1.6982376575469971e-2 1.7718825340270996e+0 1.7549001574516296e+0 9.9041563069258731e-1 7.1525573730468750e-7	22	[4] 0.0000000000000000e+0 1.7718825340270996e+0 1.7718825340270996e+0 1.0000000000000000e+0 7.1525573730468750e-7
23	[5] 1.6406312584877014e-2 1.7117781639099121e+0 1.6953718513250351e+0 9.9041563157494483e-1 7.1525573730468750e-7	23	[5] 0.0000000000000000e+0 1.7117781639099121e+0 1.7117781639099121e+0 1.0000000000000000e+0 7.1525573730468750e-7
24	[6] 1.5994217246770859e-2 1.6687812805175781e+0 1.6527870632708073e+0 9.9041562999687405e-1 7.1525573730468750e-7	24	[6] 0.0000000000000000e+0 1.6687812805175781e+0 1.6687812805175781e+0 1.0000000000000000e+0 7.1525573730468750e-7
25	...and 1271 more errors.	25	...and 1271 more errors.
26	Max AbsError of 1.8309436403214931e+0 at index of 144.	26	Max AbsError of 1.8486618995666504e+0 at index of 144.
27	[144] -1.7718259245157242e-2 -1.8486618995666504e+0 1.8309436403214931e+0 9.9041563021918144e-1 7.1525573730468750e-7	27	[144] 0.0000000000000000e+0 -1.8486618995666504e+0 1.8486618995666504e+0 1.0000000000000000e+0 7.1525573730468750e-7
28	Max RelError of 9.9041564970368201e-1 at index of 244.	28	Max RelError of 1.0000000000000000e+0 at index of 2.
29	[244] -2.2633560001850128e-4 -2.3615121841430664e-2 2.3388786241412163e-2 9.9041564970368201e-1 7.1525573730468750e-7
30	assert_true: expected true got false	29	assert_true: expected true got false
31	FAIL X 1: Channel 1 does not equal [0,0,0,0.9485263228416443,0.8472320437431335,1.7718825340270996,1.711778163909912,1.6687812805175781,1.7225778102874756,1.6410211324691772,1.8474152088165283,1.193971872329712,0.20856016874313354,-0.5265977382659912,-1.5727125406265259,-1.8001943826675415...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.	30	FAIL X 1: Channel 1 does not equal [0,0,0,0.9485263228416443,0.8472320437431335,1.7718825340270996,1.711778163909912,1.6687812805175781,1.7225778102874756,1.6410211324691772,1.8474152088165283,1.193971872329712,0.20856016874313354,-0.5265977382659912,-1.5727125406265259,-1.8001943826675415...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.
32	Index Actual Expected AbsError RelError Test threshold	31	Index Actual Expected AbsError RelError Test threshold
33	[3] 9.0910261496901512e-3 9.4852632284164429e-1 9.3943529669195414e-1 9.9041563114194364e-1 7.1525573730468750e-7	32	[3] 0.0000000000000000e+0 9.4852632284164429e-1 9.4852632284164429e-1 1.0000000000000000e+0 7.1525573730468750e-7
34	[4] 8.1201847642660141e-3 8.4723204374313354e-1 8.3911185897886753e-1 9.9041563073040717e-1 7.1525573730468750e-7	33	[4] 0.0000000000000000e+0 8.4723204374313354e-1 8.4723204374313354e-1 1.0000000000000000e+0 7.1525573730468750e-7
35	[5] 1.6982376575469971e-2 1.7718825340270996e+0 1.7549001574516296e+0 9.9041563069258731e-1 7.1525573730468750e-7	34	[5] 0.0000000000000000e+0 1.7718825340270996e+0 1.7718825340270996e+0 1.0000000000000000e+0 7.1525573730468750e-7
36	[6] 1.6406312584877014e-2 1.7117781639099121e+0 1.6953718513250351e+0 9.9041563157494483e-1 7.1525573730468750e-7	35	[6] 0.0000000000000000e+0 1.7117781639099121e+0 1.7117781639099121e+0 1.0000000000000000e+0 7.1525573730468750e-7
37	[7] 1.5994217246770859e-2 1.6687812805175781e+0 1.6527870632708073e+0 9.9041562999687405e-1 7.1525573730468750e-7	36	[7] 0.0000000000000000e+0 1.6687812805175781e+0 1.6687812805175781e+0 1.0000000000000000e+0 7.1525573730468750e-7
38	...and 1270 more errors.	37	...and 1270 more errors.
39	Max AbsError of 1.8309436403214931e+0 at index of 145.	38	Max AbsError of 1.8486618995666504e+0 at index of 145.
40	[145] -1.7718259245157242e-2 -1.8486618995666504e+0 1.8309436403214931e+0 9.9041563021918144e-1 7.1525573730468750e-7	39	[145] 0.0000000000000000e+0 -1.8486618995666504e+0 1.8486618995666504e+0 1.0000000000000000e+0 7.1525573730468750e-7
41	Max RelError of 9.9041564970368201e-1 at index of 245.	40	Max RelError of 1.0000000000000000e+0 at index of 3.
42	[245] -2.2633560001850128e-4 -2.3615121841430664e-2 2.3388786241412163e-2 9.9041564970368201e-1 7.1525573730468750e-7
43	assert_true: expected true got false	41	assert_true: expected true got false
44	FAIL < [1-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false	42	FAIL < [1-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false
45	PASS > [2-channel input] produces 2-channel output	43	PASS > [2-channel input] produces 2-channel output
46	FAIL X 2: Channel 0 does not equal [0,0,0.9485263228416443,0.8472320437431335,1.818056344985962,1.6351237297058105,1.7563552856445312,1.6286998987197876,1.7798327207565308,1.3096126317977905,-0.5365101099014282,-1.5863292217254639,-1.808717966079712,-1.5926569700241089,-1.8038825988769531,-1.4375803470611572...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.	44	PASS 2: Channel 0 equals [0,0,0.9485263228416443,0.8472320437431335,1.818056344985962,1.6351237297058105,1.7563552856445312,1.6286998987197876,1.7798327207565308,1.3096126317977905,-0.5365101099014282,-1.5863292217254639,-1.808717966079712,-1.5926569700241089,-1.8038825988769531,-1.4375803470611572...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.
47	Index Actual Expected AbsError RelError Test threshold	45	PASS 2: Channel 1 equals [0,0,0,0.9485263228416443,0.8472320437431335,1.818056344985962,1.6351237297058105,1.7563552856445312,1.6286998987197876,1.7798327207565308,1.3096126317977905,-0.5365101099014282,-1.5863292217254639,-1.808717966079712,-1.5926569700241089,-1.8038825988769531...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.
48	[2] 9.0910261496901512e-3 9.4852632284164429e-1 9.3943529669195414e-1 9.9041563114194364e-1 7.1525573730468750e-7	46	PASS < [2-channel input] All assertions passed. (total 2 assertions)
49	[3] 8.1201847642660141e-3 8.4723204374313354e-1 8.3911185897886753e-1 9.9041563073040717e-1 7.1525573730468750e-7
50	[4] 1.7424922436475754e-2 1.8180563449859619e+0 1.8006314225494862e+0 9.9041563124018017e-1 7.1525573730468750e-7
51	[5] 1.5671629458665848e-2 1.6351237297058105e+0 1.6194521002471447e+0 9.9041563083334039e-1 7.1525573730468750e-7
52	[6] 1.6833558678627014e-2 1.7563552856445313e+0 1.7395217269659042e+0 9.9041563013120681e-1 7.1525573730468750e-7
53	...and 1273 more errors.
54	Max AbsError of 1.9325089044868946e+0 at index of 542.
55	[542] 1.8701117485761642e-2 1.9512100219726563e+0 1.9325089044868946e+0 9.9041563067267613e-1 7.1525573730468750e-7
56	Max RelError of 9.9041640428211586e-1 at index of 689.
57	[689] 9.0710818767547607e-6 9.4652175903320313e-4 9.3745067715644836e-4 9.9041640428211586e-1 7.1525573730468750e-7
58	assert_true: expected true got false
59	FAIL X 2: Channel 1 does not equal [0,0,0,0.9485263228416443,0.8472320437431335,1.818056344985962,1.6351237297058105,1.7563552856445312,1.6286998987197876,1.7798327207565308,1.3096126317977905,-0.5365101099014282,-1.5863292217254639,-1.808717966079712,-1.5926569700241089,-1.8038825988769531...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.
60	Index Actual Expected AbsError RelError Test threshold
61	[3] 9.0910261496901512e-3 9.4852632284164429e-1 9.3943529669195414e-1 9.9041563114194364e-1 7.1525573730468750e-7
62	[4] 8.1201847642660141e-3 8.4723204374313354e-1 8.3911185897886753e-1 9.9041563073040717e-1 7.1525573730468750e-7
63	[5] 1.7424922436475754e-2 1.8180563449859619e+0 1.8006314225494862e+0 9.9041563124018017e-1 7.1525573730468750e-7
64	[6] 1.5671629458665848e-2 1.6351237297058105e+0 1.6194521002471447e+0 9.9041563083334039e-1 7.1525573730468750e-7
65	[7] 1.6833558678627014e-2 1.7563552856445313e+0 1.7395217269659042e+0 9.9041563013120681e-1 7.1525573730468750e-7
66	...and 1272 more errors.
67	Max AbsError of 1.9325089044868946e+0 at index of 543.
68	[543] 1.8701117485761642e-2 1.9512100219726563e+0 1.9325089044868946e+0 9.9041563067267613e-1 7.1525573730468750e-7
69	Max RelError of 9.9041640428211586e-1 at index of 690.
70	[690] 9.0710818767547607e-6 9.4652175903320313e-4 9.3745067715644836e-4 9.9041640428211586e-1 7.1525573730468750e-7
71	assert_true: expected true got false
72	FAIL < [2-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false
73	PASS > [3-channel input] 3->2 downmix producing 2-channel output	47	PASS > [3-channel input] 3->2 downmix producing 2-channel output
74	FAIL X 3: Channel 0 does not equal [0,0,0.9485263228416443,0.8472320437431335,1.818056344985962,1.6351237297058105,1.7563552856445312,1.6286998987197876,1.7798327207565308,1.3096126317977905,-0.5365101099014282,-1.5863292217254639,-1.808717966079712,-1.5926569700241089,-1.8038825988769531,-1.4375803470611572...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.	48	FAIL X 3: Channel 0 does not equal [0,0,0.9485263228416443,0.8472320437431335,1.818056344985962,1.6351237297058105,1.7563552856445312,1.6286998987197876,1.7798327207565308,1.3096126317977905,-0.5365101099014282,-1.5863292217254639,-1.808717966079712,-1.5926569700241089,-1.8038825988769531,-1.4375803470611572...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.
75	Index Actual Expected AbsError RelError Test threshold	49	Index Actual Expected AbsError RelError Test threshold
76	[2] 9.0910261496901512e-3 9.4852632284164429e-1 9.3943529669195414e-1 9.9041563114194364e-1 7.1525573730468750e-7	50	[2] 0.0000000000000000e+0 9.4852632284164429e-1 9.4852632284164429e-1 1.0000000000000000e+0 7.1525573730468750e-7
77	[3] 8.1201847642660141e-3 8.4723204374313354e-1 8.3911185897886753e-1 9.9041563073040717e-1 7.1525573730468750e-7	51	[3] 0.0000000000000000e+0 8.4723204374313354e-1 8.4723204374313354e-1 1.0000000000000000e+0 7.1525573730468750e-7
78	[4] 1.7424922436475754e-2 1.8180563449859619e+0 1.8006314225494862e+0 9.9041563124018017e-1 7.1525573730468750e-7	52	[4] 0.0000000000000000e+0 1.8180563449859619e+0 1.8180563449859619e+0 1.0000000000000000e+0 7.1525573730468750e-7
79	[5] 1.5671629458665848e-2 1.6351237297058105e+0 1.6194521002471447e+0 9.9041563083334039e-1 7.1525573730468750e-7	53	[5] 0.0000000000000000e+0 1.6351237297058105e+0 1.6351237297058105e+0 1.0000000000000000e+0 7.1525573730468750e-7
80	[6] 1.6833558678627014e-2 1.7563552856445313e+0 1.7395217269659042e+0 9.9041563013120681e-1 7.1525573730468750e-7	54	[6] 0.0000000000000000e+0 1.7563552856445313e+0 1.7563552856445313e+0 1.0000000000000000e+0 7.1525573730468750e-7
81	...and 1273 more errors.	55	...and 1273 more errors.
82	Max AbsError of 1.9325089044868946e+0 at index of 542.	56	Max AbsError of 1.9512100219726563e+0 at index of 542.
83	[542] 1.8701117485761642e-2 1.9512100219726563e+0 1.9325089044868946e+0 9.9041563067267613e-1 7.1525573730468750e-7	57	[542] 0.0000000000000000e+0 1.9512100219726563e+0 1.9512100219726563e+0 1.0000000000000000e+0 7.1525573730468750e-7
84	Max RelError of 9.9041640428211586e-1 at index of 689.	58	Max RelError of 1.0000000000000000e+0 at index of 2.
85	[689] 9.0710818767547607e-6 9.4652175903320313e-4 9.3745067715644836e-4 9.9041640428211586e-1 7.1525573730468750e-7
86	assert_true: expected true got false	59	assert_true: expected true got false
87	FAIL X 3: Channel 1 does not equal [0,0,0,0.9485263228416443,0.8472320437431335,1.818056344985962,1.6351237297058105,1.7563552856445312,1.6286998987197876,1.7798327207565308,1.3096126317977905,-0.5365101099014282,-1.5863292217254639,-1.808717966079712,-1.5926569700241089,-1.8038825988769531...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.	60	FAIL X 3: Channel 1 does not equal [0,0,0,0.9485263228416443,0.8472320437431335,1.818056344985962,1.6351237297058105,1.7563552856445312,1.6286998987197876,1.7798327207565308,1.3096126317977905,-0.5365101099014282,-1.5863292217254639,-1.808717966079712,-1.5926569700241089,-1.8038825988769531...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.
88	Index Actual Expected AbsError RelError Test threshold	61	Index Actual Expected AbsError RelError Test threshold
89	[3] 9.0910261496901512e-3 9.4852632284164429e-1 9.3943529669195414e-1 9.9041563114194364e-1 7.1525573730468750e-7	62	[3] 0.0000000000000000e+0 9.4852632284164429e-1 9.4852632284164429e-1 1.0000000000000000e+0 7.1525573730468750e-7
90	[4] 8.1201847642660141e-3 8.4723204374313354e-1 8.3911185897886753e-1 9.9041563073040717e-1 7.1525573730468750e-7	63	[4] 0.0000000000000000e+0 8.4723204374313354e-1 8.4723204374313354e-1 1.0000000000000000e+0 7.1525573730468750e-7
91	[5] 1.7424922436475754e-2 1.8180563449859619e+0 1.8006314225494862e+0 9.9041563124018017e-1 7.1525573730468750e-7	64	[5] 0.0000000000000000e+0 1.8180563449859619e+0 1.8180563449859619e+0 1.0000000000000000e+0 7.1525573730468750e-7
92	[6] 1.5671629458665848e-2 1.6351237297058105e+0 1.6194521002471447e+0 9.9041563083334039e-1 7.1525573730468750e-7	65	[6] 0.0000000000000000e+0 1.6351237297058105e+0 1.6351237297058105e+0 1.0000000000000000e+0 7.1525573730468750e-7
93	[7] 1.6833558678627014e-2 1.7563552856445313e+0 1.7395217269659042e+0 9.9041563013120681e-1 7.1525573730468750e-7	66	[7] 0.0000000000000000e+0 1.7563552856445313e+0 1.7563552856445313e+0 1.0000000000000000e+0 7.1525573730468750e-7
94	...and 1272 more errors.	67	...and 1272 more errors.
95	Max AbsError of 1.9325089044868946e+0 at index of 543.	68	Max AbsError of 1.9512100219726563e+0 at index of 543.
96	[543] 1.8701117485761642e-2 1.9512100219726563e+0 1.9325089044868946e+0 9.9041563067267613e-1 7.1525573730468750e-7	69	[543] 0.0000000000000000e+0 1.9512100219726563e+0 1.9512100219726563e+0 1.0000000000000000e+0 7.1525573730468750e-7
97	Max RelError of 9.9041640428211586e-1 at index of 690.	70	Max RelError of 1.0000000000000000e+0 at index of 3.
98	[690] 9.0710818767547607e-6 9.4652175903320313e-4 9.3745067715644836e-4 9.9041640428211586e-1 7.1525573730468750e-7
99	assert_true: expected true got false	71	assert_true: expected true got false
100	FAIL < [3-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false	72	FAIL < [3-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false
101	PASS > [4-channel input] 4->2 downmix producing 2-channel output	73	PASS > [4-channel input] 4->2 downmix producing 2-channel output
102	FAIL X 4: Channel 0 does not equal [0,0,0.9734256267547607,0.8085750341415405,1.831641674041748,1.6426398754119873,1.0671128034591675,0.11098088324069977,0.06545668840408325,-0.29284289479255676,-0.7969464659690857,-0.007874995470046997,-0.029948651790618896,0.06689149141311646,-0.2781907618045807,-1.2002575397491455...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.	74	FAIL X 4: Channel 0 does not equal [0,0,0.9734256267547607,0.8085750341415405,1.831641674041748,1.6426398754119873,1.0671128034591675,0.11098088324069977,0.06545668840408325,-0.29284289479255676,-0.7969464659690857,-0.007874995470046997,-0.029948651790618896,0.06689149141311646,-0.2781907618045807,-1.2002575397491455...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.
103	Index Actual Expected AbsError RelError Test threshold	75	Index Actual Expected AbsError RelError Test threshold
104	[2] 9.3296701088547707e-3 9.7342562675476074e-1 9.6409595664590597e-1 9.9041563129999122e-1 7.1525573730468750e-7	76	[2] 0.0000000000000000e+0 9.7342562675476074e-1 9.7342562675476074e-1 1.0000000000000000e+0 7.1525573730468750e-7
105	[3] 7.7496818266808987e-3 8.0857503414154053e-1 8.0082535231485963e-1 9.9041563058534365e-1 7.1525573730468750e-7	77	[3] 0.0000000000000000e+0 8.0857503414154053e-1 8.0857503414154053e-1 1.0000000000000000e+0 7.1525573730468750e-7
106	[4] 1.7555128782987595e-2 1.8316416740417480e+0 1.8140865452587605e+0 9.9041563148961886e-1 7.1525573730468750e-7	78	[4] 0.0000000000000000e+0 1.8316416740417480e+0 1.8316416740417480e+0 1.0000000000000000e+0 7.1525573730468750e-7
107	[5] 1.5743665397167206e-2 1.6426398754119873e+0 1.6268962100148201e+0 9.9041563179317160e-1 7.1525573730468750e-7	79	[5] 0.0000000000000000e+0 1.6426398754119873e+0 1.6426398754119873e+0 1.0000000000000000e+0 7.1525573730468750e-7
108	[6] 1.0227602906525135e-2 1.0671128034591675e+0 1.0568852005526423e+0 9.9041563096856189e-1 7.1525573730468750e-7	80	[6] 0.0000000000000000e+0 1.0671128034591675e+0 1.0671128034591675e+0 1.0000000000000000e+0 7.1525573730468750e-7
109	...and 1273 more errors.	81	...and 1273 more errors.
110	Max AbsError of 1.9324576631188393e+0 at index of 1175.	82	Max AbsError of 1.9511582851409912e+0 at index of 1175.
111	[1175] 1.8700622022151947e-2 1.9511582851409912e+0 1.9324576631188393e+0 9.9041563046700709e-1 7.1525573730468750e-7	83	[1175] 0.0000000000000000e+0 1.9511582851409912e+0 1.9511582851409912e+0 1.0000000000000000e+0 7.1525573730468750e-7
112	Max RelError of 9.9041567469489644e-1 at index of 664.	84	Max RelError of 1.0000000000000000e+0 at index of 2.
113	[664] 3.4756085369735956e-6 3.6263465881347656e-4 3.5915905027650297e-4 9.9041567469489644e-1 7.1525573730468750e-7
114	assert_true: expected true got false	85	assert_true: expected true got false
115	FAIL X 4: Channel 1 does not equal [0,0,0,0.9734256267547607,0.8085750341415405,1.831641674041748,1.6426398754119873,1.0671128034591675,0.11098088324069977,0.06545668840408325,-0.29284289479255676,-0.7969464659690857,-0.007874995470046997,-0.029948651790618896,0.06689149141311646,-0.2781907618045807...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.	86	FAIL X 4: Channel 1 does not equal [0,0,0,0.9734256267547607,0.8085750341415405,1.831641674041748,1.6426398754119873,1.0671128034591675,0.11098088324069977,0.06545668840408325,-0.29284289479255676,-0.7969464659690857,-0.007874995470046997,-0.029948651790618896,0.06689149141311646,-0.2781907618045807...] with an element-wise tolerance of {"absoluteThreshold":7.152557373046875e-7,"relativeThreshold":0}.
116	Index Actual Expected AbsError RelError Test threshold	87	Index Actual Expected AbsError RelError Test threshold
117	[3] 9.3296701088547707e-3 9.7342562675476074e-1 9.6409595664590597e-1 9.9041563129999122e-1 7.1525573730468750e-7	88	[3] 0.0000000000000000e+0 9.7342562675476074e-1 9.7342562675476074e-1 1.0000000000000000e+0 7.1525573730468750e-7
118	[4] 7.7496818266808987e-3 8.0857503414154053e-1 8.0082535231485963e-1 9.9041563058534365e-1 7.1525573730468750e-7	89	[4] 0.0000000000000000e+0 8.0857503414154053e-1 8.0857503414154053e-1 1.0000000000000000e+0 7.1525573730468750e-7
119	[5] 1.7555128782987595e-2 1.8316416740417480e+0 1.8140865452587605e+0 9.9041563148961886e-1 7.1525573730468750e-7	90	[5] 0.0000000000000000e+0 1.8316416740417480e+0 1.8316416740417480e+0 1.0000000000000000e+0 7.1525573730468750e-7
120	[6] 1.5743665397167206e-2 1.6426398754119873e+0 1.6268962100148201e+0 9.9041563179317160e-1 7.1525573730468750e-7	91	[6] 0.0000000000000000e+0 1.6426398754119873e+0 1.6426398754119873e+0 1.0000000000000000e+0 7.1525573730468750e-7
121	[7] 1.0227602906525135e-2 1.0671128034591675e+0 1.0568852005526423e+0 9.9041563096856189e-1 7.1525573730468750e-7	92	[7] 0.0000000000000000e+0 1.0671128034591675e+0 1.0671128034591675e+0 1.0000000000000000e+0 7.1525573730468750e-7
122	...and 1272 more errors.	93	...and 1272 more errors.
123	Max AbsError of 1.9324576631188393e+0 at index of 1176.	94	Max AbsError of 1.9511582851409912e+0 at index of 1176.
124	[1176] 1.8700622022151947e-2 1.9511582851409912e+0 1.9324576631188393e+0 9.9041563046700709e-1 7.1525573730468750e-7	95	[1176] 0.0000000000000000e+0 1.9511582851409912e+0 1.9511582851409912e+0 1.0000000000000000e+0 7.1525573730468750e-7
125	Max RelError of 9.9041567469489644e-1 at index of 665.	96	Max RelError of 1.0000000000000000e+0 at index of 3.
126	[665] 3.4756085369735956e-6 3.6263465881347656e-4 3.5915905027650297e-4 9.9041567469489644e-1 7.1525573730468750e-7
127	assert_true: expected true got false	97	assert_true: expected true got false
128	FAIL < [4-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false	98	FAIL < [4-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false
129	PASS > [5.1-channel input] 5.1->2 downmix producing 2-channel output	99	PASS > [5.1-channel input] 5.1->2 downmix producing 2-channel output
130	FAIL X 5.1: Channel 0 does not equal [0,0,2.302107334136963,2.0779101848602295,3.943439245223999,2.6875929832458496,1.0334471464157104,0.5752094984054565,1.1987407207489014,1.1847302913665771,-0.41883009672164917,-2.212879180908203,-2.9619672298431396,-1.2789843082427979,0.2622532546520233,0.6033463478088379...] with an element-wise tolerance of {"absoluteThreshold":0.0000017267801015661442,"relativeThreshold":0}.	100	PASS 5.1: Channel 0 equals [0,0,2.302107334136963,2.0779101848602295,3.943439245223999,2.6875929832458496,1.0334471464157104,0.5752094984054565,1.1987407207489014,1.1847302913665771,-0.41883009672164917,-2.212879180908203,-2.9619672298431396,-1.2789843082427979,0.2622532546520233,0.6033463478088379...] with an element-wise tolerance of {"absoluteThreshold":0.0000017267801015661442,"relativeThreshold":0}.
131	Index Actual Expected AbsError RelError Test threshold	101	PASS 5.1: Channel 1 equals [0,0,0,2.302107334136963,2.0779101848602295,3.943439245223999,2.6875929832458496,1.0334471464157104,0.5752094984054565,1.1987407207489014,1.1847302913665771,-0.41883009672164917,-2.212879180908203,-2.9619672298431396,-1.2789843082427979,0.2622532546520233...] with an element-wise tolerance of {"absoluteThreshold":0.0000017267801015661442,"relativeThreshold":0}.
132	[2] 2.2064246237277985e-2 2.3021073341369629e+0 2.2800430878996849e+0 9.9041563096989582e-1 1.7267801015661442e-6	102	PASS < [5.1-channel input] All assertions passed. (total 2 assertions)
133	[3] 1.9915457814931870e-2 2.0779101848602295e+0 2.0579947270452976e+0 9.9041563107008324e-1 1.7267801015661442e-6
134	[4] 3.7795379757881165e-2 3.9434392452239990e+0 3.9056438654661179e+0 9.9041563026394885e-1 1.7267801015661442e-6
135	[5] 2.5758884847164154e-2 2.6875929832458496e+0 2.6618340983986855e+0 9.9041563026554169e-1 1.7267801015661442e-6
136	[6] 9.9049387499690056e-3 1.0334471464157104e+0 1.0235422076657414e+0 9.9041563104187558e-1 1.7267801015661442e-6
137	...and 1273 more errors.
138	Max AbsError of 3.9134636670351028e+0 at index of 153.
139	[153] 3.7871047854423523e-2 3.9513347148895264e+0 3.9134636670351028e+0 9.9041563153034928e-1 1.7267801015661442e-6
140	Max RelError of 9.9041565882256477e-1 at index of 694.
141	[694] -4.5286957174539566e-5 -4.7250986099243164e-3 4.6798116527497768e-3 9.9041565882256477e-1 1.7267801015661442e-6
142	assert_true: expected true got false
143	FAIL X 5.1: Channel 1 does not equal [0,0,0,2.302107334136963,2.0779101848602295,3.943439245223999,2.6875929832458496,1.0334471464157104,0.5752094984054565,1.1987407207489014,1.1847302913665771,-0.41883009672164917,-2.212879180908203,-2.9619672298431396,-1.2789843082427979,0.2622532546520233...] with an element-wise tolerance of {"absoluteThreshold":0.0000017267801015661442,"relativeThreshold":0}.
144	Index Actual Expected AbsError RelError Test threshold
145	[3] 2.2064246237277985e-2 2.3021073341369629e+0 2.2800430878996849e+0 9.9041563096989582e-1 1.7267801015661442e-6
146	[4] 1.9915457814931870e-2 2.0779101848602295e+0 2.0579947270452976e+0 9.9041563107008324e-1 1.7267801015661442e-6
147	[5] 3.7795379757881165e-2 3.9434392452239990e+0 3.9056438654661179e+0 9.9041563026394885e-1 1.7267801015661442e-6
148	[6] 2.5758884847164154e-2 2.6875929832458496e+0 2.6618340983986855e+0 9.9041563026554169e-1 1.7267801015661442e-6
149	[7] 9.9049387499690056e-3 1.0334471464157104e+0 1.0235422076657414e+0 9.9041563104187558e-1 1.7267801015661442e-6
150	...and 1272 more errors.
151	Max AbsError of 3.9134636670351028e+0 at index of 154.
152	[154] 3.7871047854423523e-2 3.9513347148895264e+0 3.9134636670351028e+0 9.9041563153034928e-1 1.7267801015661442e-6
153	Max RelError of 9.9041565882256477e-1 at index of 695.
154	[695] -4.5286957174539566e-5 -4.7250986099243164e-3 4.6798116527497768e-3 9.9041565882256477e-1 1.7267801015661442e-6
155	assert_true: expected true got false
156	FAIL < [5.1-channel input] 2 out of 2 assertions were failed. assert_true: expected true got false
157	PASS > [delayed buffer set] Delayed set of 4-channel response	103	PASS > [delayed buffer set] Delayed set of 4-channel response
158	PASS Output with delayed setting of convolver buffer is not constantly 0 (contains 768 different values).	104	PASS Output with delayed setting of convolver buffer is not constantly 0 (contains 768 different values).
159	PASS < [delayed buffer set] All assertions passed. (total 1 assertions)	105	PASS < [delayed buffer set] All assertions passed. (total 1 assertions)
160	PASS > [count 1, 2-channel in] 2->1 downmix because channel count is 1	106	PASS > [count 1, 2-channel in] 2->1 downmix because channel count is 1
161	PASS Convolver count 1, stereo in: output 0 is identical to the array [0,0,0.009091026149690151,0.008120184764266014,0.01698237657546997,0.016406312584877014,0.01599421724677086,0.016509821638464928,0.01572815328836441,0.017706308513879776,0.011443466879427433,0.0019989171996712685,-0.0050471071153879166,-0.015073457732796669,-0.017253726720809937,-0.015591667033731937...].	107	PASS Convolver count 1, stereo in: output 0 is identical to the array [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0...].
162	PASS Convolver count 1, stereo in: output 1 is identical to the array [0,0,0,0.009091026149690151,0.008120184764266014,0.01698237657546997,0.016406312584877014,0.01599421724677086,0.016509821638464928,0.01572815328836441,0.017706308513879776,0.011443466879427433,0.0019989171996712685,-0.0050471071153879166,-0.015073457732796669,-0.017253726720809937...].	108	PASS Convolver count 1, stereo in: output 1 is identical to the array [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0...].
163	PASS < [count 1, 2-channel in] All assertions passed. (total 2 assertions)	109	PASS < [count 1, 2-channel in] All assertions passed. (total 2 assertions)
164	PASS > [count 1, 4-channel in] 4->1 downmix because channel count is 1	110	PASS > [count 1, 4-channel in] 4->1 downmix because channel count is 1
165	PASS Convolver count 1, 4-channel in: output 0 is identical to the array [0,0,0.009322743862867355,0.007732070982456207,0.0176837258040905,0.012612107209861279,0.009366313926875591,0.0031793261878192425,-0.0025462862104177475,-0.0019170588348060846,-0.003677866654470563,0.00027301706722937524,-0.0018339641392230988,-0.0031614925246685743,-0.001535282121039927,-0.005929086357355118...].	111	FAIL X Convolver count 1, 4-channel in: output 0 expected to be equal to the array [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0...] but differs in 1278 places:
166	PASS Convolver count 1, 4-channel in: output 1 is identical to the array [0,0,0,0.009322743862867355,0.007732070982456207,0.0176837258040905,0.012612107209861279,0.009366313926875591,0.0031793261878192425,-0.0025462862104177475,-0.0019170588348060846,-0.003677866654470563,0.00027301706722937524,-0.0018339641392230988,-0.0031614925246685743,-0.001535282121039927...].	112	Index Actual Expected
167	PASS < [count 1, 4-channel in] All assertions passed. (total 2 assertions)	113	[2] 9.7270292043685913e-1 0.0000000000000000e+0
		114	[3] 8.0673760175704956e-1 0.0000000000000000e+0
		115	[4] 1.8450587987899780e+0 0.0000000000000000e+0
		116	[5] 1.3159036636352539e+0 0.0000000000000000e+0
		117	...and 1274 more errors. assert_true: expected true got false
		118	FAIL X Convolver count 1, 4-channel in: output 1 expected to be equal to the array [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0...] but differs in 1277 places:
		119	Index Actual Expected
		120	[3] 9.7270292043685913e-1 0.0000000000000000e+0
		121	[4] 8.0673760175704956e-1 0.0000000000000000e+0
		122	[5] 1.8450587987899780e+0 0.0000000000000000e+0
		123	[6] 1.3159036636352539e+0 0.0000000000000000e+0
		124	...and 1273 more errors. assert_true: expected true got false
		125	FAIL < [count 1, 4-channel in] 2 out of 2 assertions were failed. assert_true: expected true got false
168	PASS > [count 1, 5.1-channel in] 5.1->1 downmix because channel count is 1	126	PASS > [count 1, 5.1-channel in] 5.1->1 downmix because channel count is 1
169	PASS Convolver count 1, 5.1 channel in: output 0 is identical to the array [0,0,0.031914617866277695,0.02663126215338707,0.05076988413929939,0.036230798810720444,0.019873308017849922,0.010681130923330784,0.0016360501758754253,-0.0024065938778221607,-0.010077287442982197,-0.013031281530857086,-0.017791341990232468,-0.008435824885964394,0.006493833381682634,0.002182352589443326...].	127	FAIL X Convolver count 1, 5.1 channel in: output 0 expected to be equal to the array [0,0,3.3298611640930176,2.778614044189453,5.297154426574707,3.7801966667175293,2.073512315750122,1.1144323348999023,0.1706998348236084,-0.2510956823825836,-1.051429271697998,-1.3596389293670654,-1.8562872409820557,-0.8801648020744324,0.6775441765785217,0.2276991307735443...] but differs in 1278 places:
170	PASS Convolver count 1, 5.1 channel in: output 1 is identical to the array [0,0,0,0.031914617866277695,0.02663126215338707,0.05076988413929939,0.036230798810720444,0.019873308017849922,0.010681130923330784,0.0016360501758754253,-0.0024065938778221607,-0.010077287442982197,-0.013031281530857086,-0.017791341990232468,-0.008435824885964394,0.006493833381682634...].	128	Index Actual Expected
171	PASS < [count 1, 5.1-channel in] All assertions passed. (total 2 assertions)	129	[2] 0.0000000000000000e+0 3.3298611640930176e+0
		130	[3] 0.0000000000000000e+0 2.7786140441894531e+0
		131	[4] 0.0000000000000000e+0 5.2971544265747070e+0
		132	[5] 0.0000000000000000e+0 3.7801966667175293e+0
		133	...and 1274 more errors. assert_true: expected true got false
		134	FAIL X Convolver count 1, 5.1 channel in: output 1 expected to be equal to the array [0,0,0,3.3298611640930176,2.778614044189453,5.297154426574707,3.7801966667175293,2.073512315750122,1.1144323348999023,0.1706998348236084,-0.2510956823825836,-1.051429271697998,-1.3596389293670654,-1.8562872409820557,-0.8801648020744324,0.6775441765785217...] but differs in 1277 places:
		135	Index Actual Expected
		136	[3] 0.0000000000000000e+0 3.3298611640930176e+0
		137	[4] 0.0000000000000000e+0 2.7786140441894531e+0
		138	[5] 0.0000000000000000e+0 5.2971544265747070e+0
		139	[6] 0.0000000000000000e+0 3.7801966667175293e+0
		140	...and 1273 more errors. assert_true: expected true got false
		141	FAIL < [count 1, 5.1-channel in] 2 out of 2 assertions were failed. assert_true: expected true got false
172	FAIL # AUDIT TASK RUNNER FINISHED: 5 out of 10 tasks were failed. assert_true: expected true got false	142	FAIL # AUDIT TASK RUNNER FINISHED: 5 out of 10 tasks were failed. assert_true: expected true got false
173		143

Lines 1-5 a/LayoutTests/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-upmixing-1-channel-response-expected.txt_sec1
- a/LayoutTests/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-upmixing-1-channel-response-expected.txt -3 / +3 lines
1		1
2	FAIL speakers, initially mono assert_approx_equals: output at 191 in channel 0 expected -0.019168466329574585 +/- 7.152557373046875e-7 but got 0	2	FAIL speakers, initially mono assert_approx_equals: output at 191 in channel 0 expected -0.4999929368495941 +/- 7.152557373046875e-7 but got 0
3	FAIL discrete assert_approx_equals: output at 191 in channel 0 expected -0.019168466329574585 +/- 7.152557373046875e-7 but got 0	3	FAIL discrete assert_approx_equals: output at 191 in channel 0 expected -0.4999929368495941 +/- 7.152557373046875e-7 but got 0
4	FAIL speakers, initially stereo assert_approx_equals: output at 191 in channel 0 expected -0.019168466329574585 +/- 7.152557373046875e-7 but got 0	4	FAIL speakers, initially stereo assert_approx_equals: output at 191 in channel 0 expected -0.4999929368495941 +/- 7.152557373046875e-7 but got 0
5		5

Lines 3-9 PASS # AUDIT TASK RUNNER STARTED. a/LayoutTests/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/realtime-conv-expected.txt_sec1
- a/LayoutTests/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/realtime-conv-expected.txt -1 / +1 lines
3	PASS Executing "test"	3	PASS Executing "test"
4	PASS Audit report	4	PASS Audit report
5	PASS > [test] Test convolver with real-time context	5	PASS > [test] Test convolver with real-time context
6	FAIL X SNR is not greater than or equal to 88.457. Got -79.48810094446551. assert_true: expected true got false	6	FAIL X SNR is not greater than or equal to 88.457. Got 77.00623887904952. assert_true: expected true got false
7	FAIL < [test] 1 out of 1 assertions were failed. assert_true: expected true got false	7	FAIL < [test] 1 out of 1 assertions were failed. assert_true: expected true got false
8	FAIL # AUDIT TASK RUNNER FINISHED: 1 out of 1 tasks were failed. assert_true: expected true got false	8	FAIL # AUDIT TASK RUNNER FINISHED: 1 out of 1 tasks were failed. assert_true: expected true got false
9		9

Return to Bug 216099

Lines 1-3 a/Source/WebCore/ChangeLog_sec1
- a/Source/WebCore/ChangeLog +32 lines
		1	2020-09-02 Chris Dumez <cdumez@apple.com>
		2
		3	Choose adequate number of channels for ConvolverNode's output
		4	https://bugs.webkit.org/show_bug.cgi?id=216099
		5
		6	Reviewed by Eric Carlson.
		7
		8	Choose adequate number of channels for ConvolverNode's output. We were using 2 channels for
		9	the output no matter what but we're supposed to use a single channel if both the input
		10	and the response buffer are mono.
		11
		12	This is based on the following Blink change by Raymond Toy:
		13	- https://codereview.chromium.org/2732523003
		14
		15	No new tests, rebaselined existing tests.
		16
		17	* Modules/webaudio/ConvolverNode.cpp:
		18	(WebCore::computeNumberOfOutputChannels):
		19	(WebCore::ConvolverNode::create):
		20	Set the shouldNormalize flag before we set the buffer since setBuffer() relies on
		21	the flag. This gives us a few more test passes.
		22
		23	(WebCore::ConvolverNode::ConvolverNode):
		24	(WebCore::ConvolverNode::setBuffer):
		25	(WebCore::ConvolverNode::checkNumberOfChannelsForInput):
		26	* Modules/webaudio/ConvolverNode.h:
		27	* platform/audio/Reverb.cpp:
		28	(WebCore::Reverb::Reverb):
		29	(WebCore::Reverb::initialize):
		30	(WebCore::Reverb::process):
		31	* platform/audio/Reverb.h:
		32
1	2020-09-02 Chris Dumez <cdumez@apple.com>	33	2020-09-02 Chris Dumez <cdumez@apple.com>
2		34
3	Don't modify the response when creating a ConvolverNode	35	Don't modify the response when creating a ConvolverNode

Lines 85-111 static float calculateNormalizationScale(AudioBus* response) a/Source/WebCore/platform/audio/Reverb.cpp_sec1
- a/Source/WebCore/platform/audio/Reverb.cpp -41 / +63 lines
85	return scale;	85	return scale;
86	}	86	}
87		87
88	Reverb::Reverb(AudioBus* impulseResponse, size_t renderSliceSize, size_t maxFFTSize, size_t numberOfChannels, bool useBackgroundThreads, bool normalize)	88	Reverb::Reverb(AudioBus* impulseResponse, size_t renderSliceSize, size_t maxFFTSize, bool useBackgroundThreads, bool normalize)
89	{	89	{
90	float scale = 1;	90	float scale = 1;
91		91
92	if (normalize)	92	if (normalize)
93	scale = calculateNormalizationScale(impulseResponse);	93	scale = calculateNormalizationScale(impulseResponse);
94		94
95	initialize(impulseResponse, renderSliceSize, maxFFTSize, numberOfChannels, useBackgroundThreads, scale);	95	initialize(impulseResponse, renderSliceSize, maxFFTSize, useBackgroundThreads, scale);
96	}	96	}
97		97
98	void Reverb::initialize(AudioBus* impulseResponseBuffer, size_t renderSliceSize, size_t maxFFTSize, size_t numberOfChannels, bool useBackgroundThreads, float scale)	98	void Reverb::initialize(AudioBus* impulseResponseBuffer, size_t renderSliceSize, size_t maxFFTSize, bool useBackgroundThreads, float scale)
99	{	99	{
100	m_impulseResponseLength = impulseResponseBuffer->length();	100	m_impulseResponseLength = impulseResponseBuffer->length();
101		101
102	// The reverb can handle a mono impulse response and still do stereo processing	102	// The reverb can handle a mono impulse response and still do stereo processing
103	size_t numResponseChannels = impulseResponseBuffer->numberOfChannels();	103	m_numberOfResponseChannels = impulseResponseBuffer->numberOfChannels();
104	m_convolvers.reserveCapacity(numberOfChannels);	104	unsigned convolverCount = std::max(m_numberOfResponseChannels, 2u);
		105	m_convolvers.reserveCapacity(convolverCount);
105		106
106	int convolverRenderPhase = 0;	107	int convolverRenderPhase = 0;
107	for (size_t i = 0; i < numResponseChannels; ++i) {	108	for (unsigned i = 0; i < convolverCount; ++i) {
108	AudioChannel* channel = impulseResponseBuffer->channel(i);	109	auto* channel = impulseResponseBuffer->channel(std::min(i, m_numberOfResponseChannels - 1));
109		110
110	m_convolvers.append(makeUnique<ReverbConvolver>(channel, renderSliceSize, maxFFTSize, convolverRenderPhase, useBackgroundThreads, scale));	111	m_convolvers.append(makeUnique<ReverbConvolver>(channel, renderSliceSize, maxFFTSize, convolverRenderPhase, useBackgroundThreads, scale));
111		112
Lines 114-133 void Reverb::initialize(AudioBus* impulseResponseBuffer, size_t renderSliceSize, a/Source/WebCore/platform/audio/Reverb.cpp_sec2
114		115
115	// For "True" stereo processing we allocate a temporary buffer to avoid repeatedly allocating it in the process() method.	116	// For "True" stereo processing we allocate a temporary buffer to avoid repeatedly allocating it in the process() method.
116	// It can be bad to allocate memory in a real-time thread.	117	// It can be bad to allocate memory in a real-time thread.
117	if (numResponseChannels == 4)	118	if (m_numberOfResponseChannels == 4)
118	m_tempBuffer = AudioBus::create(2, MaxFrameSize);	119	m_tempBuffer = AudioBus::create(2, MaxFrameSize);
119	}	120	}
120		121
121	void Reverb::process(const AudioBus* sourceBus, AudioBus* destinationBus, size_t framesToProcess)	122	void Reverb::process(const AudioBus* sourceBus, AudioBus* destinationBus, size_t framesToProcess)
122	{	123	{
123	// Do a fairly comprehensive sanity check.	124	// Do a fairly comprehensive sanity check.
124	// If these conditions are satisfied, all of the source and destination pointers will be valid for the various matrixing cases.	125	// If these conditions are satisfied, all of the source and destination
125	bool isSafeToProcess = sourceBus && destinationBus && sourceBus->numberOfChannels() > 0 && destinationBus->numberOfChannels() > 0	126	// pointers will be valid for the various matrixing cases.
126	&& framesToProcess <= MaxFrameSize && framesToProcess <= sourceBus->length() && framesToProcess <= destinationBus->length();	127	ASSERT(sourceBus);
127		128	ASSERT(destinationBus);
128	ASSERT(isSafeToProcess);	129	ASSERT(sourceBus->numberOfChannels() > 0u);
129	if (!isSafeToProcess)	130	ASSERT(destinationBus->numberOfChannels() > 0u);
130	return;	131	ASSERT(framesToProcess <= MaxFrameSize);
		132	ASSERT(framesToProcess <= sourceBus->length());
		133	ASSERT(framesToProcess <= destinationBus->length());
131		134
132	// For now only handle mono or stereo output	135	// For now only handle mono or stereo output
133	if (destinationBus->numberOfChannels() > 2) {	136	if (destinationBus->numberOfChannels() > 2) {
Lines 141-176 void Reverb::process(const AudioBus* sourceBus, AudioBus* destinationBus, size_t a/Source/WebCore/platform/audio/Reverb.cpp_sec3
141	// Handle input -> output matrixing...	144	// Handle input -> output matrixing...
142	size_t numInputChannels = sourceBus->numberOfChannels();	145	size_t numInputChannels = sourceBus->numberOfChannels();
143	size_t numOutputChannels = destinationBus->numberOfChannels();	146	size_t numOutputChannels = destinationBus->numberOfChannels();
144	size_t numReverbChannels = m_convolvers.size();	147	size_t numberOfResponseChannels = m_numberOfResponseChannels;
145		148
146	if (numInputChannels == 2 && numReverbChannels == 2 && numOutputChannels == 2) {	149	ASSERT(numInputChannels <= 2ul);
147	// 2 -> 2 -> 2	150	ASSERT(numOutputChannels <= 2ul);
		151	ASSERT(numberOfResponseChannels == 1 \|\| numberOfResponseChannels == 2 \|\| numberOfResponseChannels == 4);
		152
		153	// These are the possible combinations of number inputs, response
		154	// channels and outputs channels that need to be supported:
		155	//
		156	// numInputChannels: 1 or 2
		157	// numberOfResponseChannels: 1, 2, or 4
		158	// numOutputChannels: 1 or 2
		159	//
		160	// Not all possible combinations are valid. numOutputChannels is
		161	// one only if both numInputChannels and numberOfResponseChannels are 1.
		162	// Otherwise numOutputChannels MUST be 2.
		163	//
		164	// The valid combinations are
		165	//
		166	// Case in -> resp -> out
		167	// 1 1 -> 1 -> 1
		168	// 2 1 -> 2 -> 2
		169	// 3 1 -> 4 -> 2
		170	// 4 2 -> 1 -> 2
		171	// 5 2 -> 2 -> 2
		172	// 6 2 -> 4 -> 2
		173
		174	if (numInputChannels == 2 && (numberOfResponseChannels == 1 \|\| numberOfResponseChannels == 2) && numOutputChannels == 2) {
		175	// Case 4 and 5: 2 -> 2 -> 2 or 2 -> 1 -> 2.
		176	//
		177	// These can be handled in the same way because in the latter
		178	// case, two connvolvers are still created with the second being a
		179	// copy of the first.
148	const AudioChannel* sourceChannelR = sourceBus->channel(1);	180	const AudioChannel* sourceChannelR = sourceBus->channel(1);
149	AudioChannel* destinationChannelR = destinationBus->channel(1);	181	AudioChannel* destinationChannelR = destinationBus->channel(1);
150	m_convolvers[0]->process(sourceChannelL, destinationChannelL, framesToProcess);	182	m_convolvers[0]->process(sourceChannelL, destinationChannelL, framesToProcess);
151	m_convolvers[1]->process(sourceChannelR, destinationChannelR, framesToProcess);	183	m_convolvers[1]->process(sourceChannelR, destinationChannelR, framesToProcess);
152	} else if (numInputChannels == 1 && numOutputChannels == 2 && numReverbChannels == 2) {	184	} else if (numInputChannels == 1 && numOutputChannels == 2 && numberOfResponseChannels == 2) {
153	// 1 -> 2 -> 2	185	// Case 2: 1 -> 2 -> 2
154	for (int i = 0; i < 2; ++i) {	186	for (int i = 0; i < 2; ++i) {
155	AudioChannel* destinationChannel = destinationBus->channel(i);	187	AudioChannel* destinationChannel = destinationBus->channel(i);
156	m_convolvers[i]->process(sourceChannelL, destinationChannel, framesToProcess);	188	m_convolvers[i]->process(sourceChannelL, destinationChannel, framesToProcess);
157	}	189	}
158	} else if (numInputChannels == 1 && numReverbChannels == 1 && numOutputChannels == 2) {	190	} else if (numInputChannels == 1 && numberOfResponseChannels == 1) {
159	// 1 -> 1 -> 2	191	// Case 1: 1 -> 1 -> 1
160	m_convolvers[0]->process(sourceChannelL, destinationChannelL, framesToProcess);	192	ASSERT(numOutputChannels == 1ul);
161
162	// simply copy L -> R
163	AudioChannel* destinationChannelR = destinationBus->channel(1);
164	bool isCopySafe = destinationChannelL->data() && destinationChannelR->data() && destinationChannelL->length() >= framesToProcess && destinationChannelR->length() >= framesToProcess;
165	ASSERT(isCopySafe);
166	if (!isCopySafe)
167	return;
168	memcpy(destinationChannelR->mutableData(), destinationChannelL->data(), sizeof(float) * framesToProcess);
169	} else if (numInputChannels == 1 && numReverbChannels == 1 && numOutputChannels == 1) {
170	// 1 -> 1 -> 1
171	m_convolvers[0]->process(sourceChannelL, destinationChannelL, framesToProcess);	193	m_convolvers[0]->process(sourceChannelL, destinationChannelL, framesToProcess);
172	} else if (numInputChannels == 2 && numReverbChannels == 4 && numOutputChannels == 2) {	194	} else if (numInputChannels == 2 && numberOfResponseChannels == 4 && numOutputChannels == 2) {
173	// 2 -> 4 -> 2 ("True" stereo)	195	// Case 6: 2 -> 4 -> 2 ("True" stereo)
174	const AudioChannel* sourceChannelR = sourceBus->channel(1);	196	const AudioChannel* sourceChannelR = sourceBus->channel(1);
175	AudioChannel* destinationChannelR = destinationBus->channel(1);	197	AudioChannel* destinationChannelR = destinationBus->channel(1);
176		198
Lines 186-194 void Reverb::process(const AudioBus* sourceBus, AudioBus* destinationBus, size_t a/Source/WebCore/platform/audio/Reverb.cpp_sec4
186	m_convolvers[3]->process(sourceChannelR, tempChannelR, framesToProcess);	208	m_convolvers[3]->process(sourceChannelR, tempChannelR, framesToProcess);
187		209
188	destinationBus->sumFrom(*m_tempBuffer);	210	destinationBus->sumFrom(*m_tempBuffer);
189	} else if (numInputChannels == 1 && numReverbChannels == 4 && numOutputChannels == 2) {	211	} else if (numInputChannels == 1 && numberOfResponseChannels == 4 && numOutputChannels == 2) {
190	// 1 -> 4 -> 2 (Processing mono with "True" stereo impulse response)	212	// Case 3: 1 -> 4 -> 2 (Processing mono with "True" stereo impulse
191	// This is an inefficient use of a four-channel impulse response, but we should handle the case.	213	// response) This is an inefficient use of a four-channel impulse
		214	// response, but we should handle the case.
192	AudioChannel* destinationChannelR = destinationBus->channel(1);	215	AudioChannel* destinationChannelR = destinationBus->channel(1);
193		216
194	AudioChannel* tempChannelL = m_tempBuffer->channel(0);	217	AudioChannel* tempChannelL = m_tempBuffer->channel(0);
Lines 204-211 void Reverb::process(const AudioBus* sourceBus, AudioBus* destinationBus, size_t a/Source/WebCore/platform/audio/Reverb.cpp_sec5
204		227
205	destinationBus->sumFrom(*m_tempBuffer);	228	destinationBus->sumFrom(*m_tempBuffer);
206	} else {	229	} else {
207	// Handle gracefully any unexpected / unsupported matrixing	230	ASSERT_NOT_REACHED();
208	// FIXME: add code for 5.1 support...
209	destinationBus->zero();	231	destinationBus->zero();
210	}	232	}
211	}	233	}

Lines 1-3 a/LayoutTests/imported/w3c/ChangeLog_sec1
- a/LayoutTests/imported/w3c/ChangeLog +16 lines
		1	2020-09-02 Chris Dumez <cdumez@apple.com>
		2
		3	Choose adequate number of channels for ConvolverNode's output
		4	https://bugs.webkit.org/show_bug.cgi?id=216099
		5
		6	Reviewed by Eric Carlson.
		7
		8	Rebaseline WPT tests now that more checks are passing.
		9
		10	* web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-cascade-expected.txt:
		11	* web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-response-1-chan-expected.txt:
		12	* web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-response-2-chan-expected.txt:
		13	* web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-response-4-chan-expected.txt:
		14	* web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/convolver-upmixing-1-channel-response-expected.txt:
		15	* web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/realtime-conv-expected.txt:
		16
1	2020-09-02 Chris Dumez <cdumez@apple.com>	17	2020-09-02 Chris Dumez <cdumez@apple.com>
2		18
3	Fix rounding for DelayDSPKernel's buffer size calculation	19	Fix rounding for DelayDSPKernel's buffer size calculation