[Webkit-unassigned] [Bug 215314] Distorted audio when using createMediaElementSource

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=215314

--- Comment #6 from Chris Dumez <cdumez at apple.com> ---
(In reply to Luigi Pulcini from comment #5)
> Hi, Chris,
> 
> Thanks for your prompt reply.
> 
> > It is honestly hard for me to tell what's wrong when watching this video. The audio does not sound obviously different / wrong to me.
> 
> The video is 2-minute long and compares the good behavior in Chrome to the
> wrong behavior in Safari.
> 
> The first minute shows how everything is perfect in Chrome, even when
> switching the device sample rate during the playback (so, after the creation
> of the audio context).
> 
> But you probably have not reached 1:12 (https://youtu.be/KYtb-FnjbpQ?t=72)
> when, in Safari, I jump from 44.1 kHz to 48 kHz. Starting from there, any
> sort of very audible audio glitches are literally devastating the audio. At
> 48 kHz they are impossible to go unnoticed. At 88.2 and 96, they simply
> destroy the audio completely.

Ahah indeed, I only watched the Chrome part. I agree that the sound is indeed terrible in the Safari part.
Could you let me know which tool you were using to change the sample rate? I'd like to test it locally on a WebKit trunk build to see if it is the same resampling bug I fixed recently.

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