[Webkit-unassigned] [Bug 234595] New: Connecting a Bluetooth headset will cause iOS 15 Safari to play a very weird sound.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=234595

            Bug ID: 234595
           Summary: Connecting a Bluetooth headset will cause iOS 15
                    Safari to play a very weird sound.
           Product: WebKit
           Version: Safari 15
          Hardware: iPhone / iPad
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rychouwei at tencent.com
                CC: youennf at gmail.com

Created attachment 447785

  --> https://bugs.webkit.org/attachment.cgi?id=447785&action=review

screen record(sounds like a baby)

Two cases, one sounds like a baby, another sounds like a monster.
Devices: iOS 15.2 Safari, iPhone 12.

Steps to reproduce:
Baby voice:
1. Open this sample(https://sdk-web-1252463788.cos.ap-hongkong.myqcloud.com/trtc/webrtc/test/rychou-test/webrtc-samples/audio/index.html) on iOS Safari.
2. Connect a bluetooth headset.
3. Close Safari and reopen it.
4. Click "start" to capture microphone and play. Try to say something and you can hear your voice.
5. Disconnect bluetooth headset, then audio will output from phone speaker.
6. Click "replay" to re-create audio element to replay audio.
7. Now, say something, your voice will sounds like a baby!

Monster voice:
1. Open this sample(https://sdk-web-1252463788.cos.ap-hongkong.myqcloud.com/trtc/webrtc/test/rychou-test/webrtc-samples/audio/index.html) on iOS Safari.
2. Don't connect bluetooth headset.
3. Close Safari and reopen it.
4. Click "start" to capture microphone and play. Try to say something and you can hear your voice.
5. Connect a bluetooth headset, then audio will output from bluetooth headset.
6. Click "replay" to re-create audio element to replay audio.
7. Now, say something, your voice will sounds like a monster!

Sample source code: https://github.com/Rychou/samples/blob/gh-pages/src/content/getusermedia/audio/index.html

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