[Webkit-unassigned] [Bug 279183] New: DelayNode does not play all audio

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=279183

            Bug ID: 279183
           Summary: DelayNode does not play all audio
           Product: WebKit
           Version: Safari 17
          Hardware: Mac (Apple Silicon)
                OS: macOS 14
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Audio
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: webkit at jan.misker.nl
                CC: cdumez at apple.com

When playing a sound from an AudioBuffer, via AudioBufferSourceNode, and then passing that through a DelayNode, the (delayed) sound doesn't play all the way. It stops playing when the original source is finished, but the delayed sound is of course not all played yet.

See this fiddle: https://jsfiddle.net/janmisker/y91gbvft/latest/

A workaround is to add a GainNode with 0 gain that feedbacks directly from output to input of the DelayNode, but I would expect this to work without that feedback. For example on Firefox it does play through without the feedback.

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