[Webkit-unassigned] [Bug 222098] New: Regression: Raw AudioBufferSourceNode playback causes repeated crackling sound

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=222098

            Bug ID: 222098
           Summary: Regression: Raw AudioBufferSourceNode playback causes
                    repeated crackling sound
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Mac (Intel)
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Audio
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jujjyl at gmail.com
                CC: cdumez at apple.com

STR: Visit and play https://smashkarts.io/webgl2/ for some minutes

Audio playback will begin to crackle.

Earlier Safari versions work ok.

More information can be found in this thread: https://forum.unity.com/threads/request-for-help-does-your-webgl-2-game-render-correctly-in-safari-tech-preview.1050890/#post-6839972 along with a video of the issue.

Unity uses Web Audio with uncompressed AudioBufferSourceNodes to play back audio, so scheduling audio samples is done inside the browser. The uncompressed audio nodes contain the "full" audio clips without JS/Wasm software mixing that would be applied.

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