Bug 187226

Summary: Monitoring sender stream with WebAudio causes audio corruption in receiver audio streams
Product: WebKit Reporter: Chad Phillips <webkit>
Component: WebRTCAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal CC: eric.carlson, webkit-bug-importer, youennf
Priority: P2 Keywords: InRadar
Version: Safari 11   
Hardware: iPhone / iPad   
OS: iOS 11   

Description Chad Phillips 2018-06-30 17:32:24 PDT 
I use Hark (https://github.com/otalk/hark), a simple wrapper around the WebAudio API, to attach to a sender's mic stream to monitor for volume changes.

When I do this, inbound audio tracks on a peer connection attached to an audio/video element have corrupted audio: missing sound, skipping, static -- basically so bad it's unintelligible. The audio is even corrupt on other inbound audio streams not related to the outbound audio, so I'm guessing this is a global audio processing issue.
Comment 1 Chad Phillips 2018-06-30 17:34:23 PDT 
I'll note that this issue only occurs on iOS. Doesn't seem to be an issue on any other platform I've tested.
Comment 2 Radar WebKit Bug Importer 2018-06-30 18:31:35 PDT 
<rdar://problem/41686301>