RESOLVED INVALID 71391
Make parameters for webaudio biquad filters consistent
https://bugs.webkit.org/show_bug.cgi?id=71391
Summary Make parameters for webaudio biquad filters consistent
Raymond Toy
Reported Wednesday, November 2, 2011 9:13:00 PM UTC
The Q parameter for the biquad filters are treated inconsistently. For all filters except lowpass and highpass filters, Q is the Q parameter, but for the LP and HP filters, Q is the resonance. The LP and HP filters should treat the Q parameter as the Q parameter instead of the resonance.
Attachments
Patch (4.76 KB, patch)
2011-11-18 11:20 PST, Raymond Toy
no flags
Raymond Toy
Comment 1 Friday, November 18, 2011 7:20:20 PM UTC
Raymond Toy
Comment 2 Friday, November 18, 2011 7:22:26 PM UTC
Make the Q parameter consistent with the Audio EQ Cookbook. This patch needs to be coordinated with the demos that use lowpass or highpass filters because the meaning of Q has changed. Q is no longer the resonance in dB, but the actual Q factor.
Raymond Toy
Comment 3 Wednesday, January 25, 2012 9:32:55 PM UTC
Make this depend on bug 71413, which will add biquad tests so we can inherit the tests from there.
Chris Rogers
Comment 4 Saturday, May 11, 2013 1:43:28 AM UTC
lowpass and highpass are now in spec as resonance in decibels
Zan Dobersek
Comment 5 Thursday, September 5, 2013 4:31:35 PM UTC
Comment on attachment 115839 [details] Patch The work on this bug has ceased, removing the r? flag on the patch.
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