RESOLVED FIXED 177276
Safari 11/Sierra - appr.tc/ affects sound of other apps 
https://bugs.webkit.org/show_bug.cgi?id=177276
Summary Safari 11/Sierra - appr.tc/ affects sound of other apps
Delia
Reported 2017-09-20 15:27:14 PDT
Have Spotify playing or any audio playing on your Mac - https://www.youtube.com/watch?v=4xxeo2XONEg 1. using Sierra and Safari 11 (Version 11.0 (12604.1.38.1.7) go to https://appr.tc 2. click Join 3. click Allow on the camera and microphone dialog RESULT: It causes the music or audio you are listening to drop audio while it is connecting EXPECTED RESULT: Audio is not affected
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Radar WebKit Bug Importer
Comment 1 2017-09-20 16:27:10 PDT
<rdar://problem/34560889>
youenn fablet
Comment 2 2017-09-20 16:39:42 PDT
Hi Delia, Thanks for the report. Whenever echo cancellation is turned on, Safari will duck the other processes. This is also happening whenever doing a call through FaceTime. If you do not want that, you can disable echo cancellation through constraints when doing the getUserMedia call. No audio ducking should happen at that point. Should you want later on to activate echo cancellation (for instance when call is on), applyConstraints might be used to enable/disable echo cancellation whenever needed.
Delia
Comment 3 2017-09-21 09:13:18 PDT
Thank you! I will pass this info to our engineers.
youenn fablet
Comment 4 2017-09-21 09:46:54 PDT
OK, please let me know how things go through on this. I'll close the bug but feel free to reopen it and/or comment on it.
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