[Webkit-unassigned] [Bug 223668] New: getChannelData keep retruning same values irrespective of gain value

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=223668

            Bug ID: 223668
           Summary: getChannelData keep retruning same values irrespective
                    of gain value
           Product: WebKit
           Version: Safari 13
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Minor
          Priority: P2
         Component: Web Audio
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: khushpreetk363 at gmail.com
                CC: cdumez at apple.com

Created attachment 424091

  --> https://bugs.webkit.org/attachment.cgi?id=424091&action=review

Audio graph

getChannelData() keep returning the same value in 'audioProcessingEvent' irrespective of the gain value in the Safari browser.  

Basically, the audio representation in the audio level doesn't change if I change the volume. (please see the audio graph attached here). 

Code works perfectly on Chrome, Firefox in Windows, and also on Chrome in macOS. The issue occurs only in Safari (tested on version 11 and above)

Returned Audio data is 0 when the gain value is 0, but the non-zero gain value doesn't make any difference for the audio data output.

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