Bug 217487

Summary: Loud static noise when sending WebRTC audio
Product: WebKit Reporter: btham
Component: WebRTCAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: btham, ddp.bkdn, webkit-bug-importer, youennf
Priority: P2 Keywords: InRadar
Version: Safari 12   
Hardware: Mac   
OS: macOS 10.14   
Attachments:
Description Flags
Loud static noise captured when receiving WebRTC audio from Safari
none
Direct microphone input recording of noise none

btham
Reported 2020-10-08 12:07:23 PDT
Created attachment 410869 [details] Loud static noise captured when receiving WebRTC audio from Safari This bug is in the context of a Webex web app meeting, which uses WebRTC. Sometimes, when sending audio from Safari, a consistent, loud static noise is heard. From what I can tell, the person sending the audio is in a relatively quiet environment. This doesn't occur always (my estimate is that it happens about 50% of the time), and sometimes the noise is quite loud while other times it is quite soft. When sending audio from other browsers (like Chrome), no loud static noise is heard. I have attached an audio sample of what it sounds like for the person receiving the audio. (Please ignore the person speaking as it comes from the person recording the audio.)
Attachments
Loud static noise captured when receiving WebRTC audio from Safari (714.96 KB, audio/x-m4a)
2020-10-08 12:07 PDT, btham 		no flags
Details
Direct microphone input recording of noise (654.24 KB, audio/mpeg)
2020-10-08 15:01 PDT, btham 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2020-10-08 12:28:28 PDT
<rdar://problem/70105109>
youenn fablet
Comment 2 2020-10-08 12:32:29 PDT
Can you take a sysdiagnose and send it to me at youenn@apple.com? If you can repro easily, would it be possible to record the microphone input (say using MediaRecorder which can be turned on STP)? That might help narrowing down the issue. Or do you have some repro steps even if it does not repro always?
btham
Comment 3 2020-10-08 15:01:53 PDT
Created attachment 410888 [details] Direct microphone input recording of noise Youenn, I just sent you an email with the sysdiagnose. Actually, I think it is possible that the source of the noise may be coming from the Macbook's internal fan. I have attached a recording of the mic input (recorded using Audacity). Again, Chrome does not seem to have this issue.
PhungDuong
Comment 4 2022-03-10 23:54:34 PST
I also have this same problem on iOS 15, will wearing a Bluetooth headset resolve this?
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