[Webkit-unassigned] [Bug 92875] exponentialRampToValue produces 0 after 512 sec

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Aug 8 16:29:51 PDT 2012


--- Comment #7 from Raymond Toy <rtoy at chromium.org>  2012-08-08 16:30:15 PST ---
(In reply to comment #6)
> (In reply to comment #5)
> > Updating summary to reflect what's really going on.
> It's not just the exponential ramp; the linear ramp shows the same issues.  More investigation needed.

This seems to be related to the gain attribute in the AudioBufferSourceNode.  If an AudioGainNode is used instead, audio continues for at least 600 sec.  There are some audio artifacts, but that might be due to using setInterval to play audio.

Since the latest version of the spec (http://www.w3.org/TR/2012/WD-webaudio-20120802/) no longer has a gain attribute in an AudioBufferSourceNode, the test uses an incorrect method now.

Perhaps this issue should be closed now.

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