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<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>69725</bug_id>
          
          <creation_ts>2011-10-09 09:18:04 -0700</creation_ts>
          <short_desc>Ability to play sound reversed (playbackRate to accept negative parameter)</short_desc>
          <delta_ts>2013-06-06 00:36:48 -0700</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>Web Audio</component>
          <version>528+ (Nightly build)</version>
          <rep_platform>All</rep_platform>
          <op_sys>All</op_sys>
          <bug_status>UNCONFIRMED</bug_status>
          <resolution></resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords></keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>0</everconfirmed>
          <reporter name="Eiji Kitamura">agektmr</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>allenmackley</cc>
    
    <cc>crogers</cc>
    
    <cc>david.corvoysier</cc>
    
    <cc>emeric</cc>
    
    <cc>rtoy</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>480717</commentid>
    <comment_count>0</comment_count>
    <who name="Eiji Kitamura">agektmr</who>
    <bug_when>2011-10-09 09:18:04 -0700</bug_when>
    <thetext>On HTML5 Audio Element, playbackRate attribute changes speed of sound playback. With negative parameter, it plays reversed.
I&apos;d like to request same functionality on Web Audio API. This enables WAA to emulate scratch noise on turntable.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>604978</commentid>
    <comment_count>1</comment_count>
    <who name="Chris Rogers">crogers</who>
    <bug_when>2012-04-18 12:11:16 -0700</bug_when>
    <thetext>This is for AudioBufferSourceNode</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>604980</commentid>
    <comment_count>2</comment_count>
    <who name="Chris Rogers">crogers</who>
    <bug_when>2012-04-18 12:16:32 -0700</bug_when>
    <thetext>Let&apos;s try to think how it interacts with the current noteOn() and noteGrainOn() API.  For example, what if we want to play a grain backwards.  Then it will have to start playing back at the end of the grain.  Let&apos;s try to make sure we get the API correct before implementing a quick fix.  I think it will be useful, but let&apos;s do it right.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>606114</commentid>
    <comment_count>3</comment_count>
    <who name="Raymond Toy">rtoy</who>
    <bug_when>2012-04-19 16:24:24 -0700</bug_when>
    <thetext>(In reply to comment #2)
&gt; Let&apos;s try to think how it interacts with the current noteOn() and noteGrainOn() API.  For example, what if we want to play a grain backwards.  Then it will have to start playing back at the end of the grain.  Let&apos;s try to make sure we get the API correct before implementing a quick fix.  I think it will be useful, but let&apos;s do it right.

That would be what I would want and expect with noteGrainOn() and a negative playbackRate: play just the selected grain backwards.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>796720</commentid>
    <comment_count>4</comment_count>
    <who name="Allen">allenmackley</who>
    <bug_when>2012-12-22 22:56:37 -0800</bug_when>
    <thetext>What is the ETA on this feature?  Really need this for rewinding.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>828401</commentid>
    <comment_count>5</comment_count>
    <who name="boblemarin">emeric</who>
    <bug_when>2013-02-08 03:45:36 -0800</bug_when>
    <thetext>How can we help to make this bug CONFIRMED ?
It looks pretty clear that it is not working the way we expect it to.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>828403</commentid>
    <comment_count>6</comment_count>
    <who name="Allen">allenmackley</who>
    <bug_when>2013-02-08 03:48:36 -0800</bug_when>
    <thetext>I&apos;d like to know as well.  Currently you can&apos;t set video.playbackRate to a negative number.</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>