Bug 311000 – HTMLMediaElement preservesPitch=true does not work when using AudioContext

• Status: RESOLVED
• Resolution: FIXED
• Component: Media

[Adele Peterson]

Created attachment 478832 [details]
test html file + MP3

HTMLMediaElement preservesPitch=true does not work when using AudioContext. See attached test case and observe chipmunk (2x speed in AudioContext) and ghost (0.5x speed in AudioContext) voices.

Tested in the 310163@main nightly on Tahoe.

Follow up needed for fix to 
https://bugs.webkit.org/show_bug.cgi?id=240405
https://github.com/WebKit/WebKit/commit/08ffa75952b7294029da4efd21197d6b697623ca

[Adele Peterson]

our workaround in Safari is to pre-download every audio clip and process it through AudioContext for gain and pan to put it back into an audio element for playback with rate and preservePitch functionality. We are losing the benefits of using one AudioContext for gesture intent.

[Radar WebKit Bug Importer]

<rdar://problem/173727365>

[Jer Noble]

Pull request: https://github.com/WebKit/WebKit/pull/61724

[EWS]

Committed 310521@main (1774dbef65c9): <https://commits.webkit.org/310521@main>

Reviewed commits have been landed. Closing PR #61724 and removing active labels.

[Brent Fulgham]

This change is present in Safari Technology Preview 242. Please install that revision or newer to confirm the fix.

Release notes: https://webkit.org/blog/17934/release-notes-for-safari-technology-preview-242/

[Brent Fulgham]

This change is present in Safari Technology Preview 241. Please install that revision or newer to confirm the fix.

Release notes: https://webkit.org/blog/17917/release-notes-for-safari-technology-preview-241/