1818901 - Audio mic input degradation after a few minutes with blue yeti mic

Status: RESOLVED FIXED

(Core :: WebRTC: Audio/Video, defect)

Description

[John Doe]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/110.0

Steps to reproduce:

Go to https://online-voice-recorder.com/
Press record
Wait two minutes
Say something
Playback my robotic crackling voice

I can switch input to a different mic and repeat the above steps and there is no crackling robot sounds (apple cinema display with a built-in mic from 2009). This was problematic with google meets hence my investigation. Problem does not occur in other browsers.

This bug is directly related to https://bugzilla.mozilla.org/show_bug.cgi?id=1757425
and https://bugzilla.mozilla.org/show_bug.cgi?id=1739505

Actual results:

Voice crackling when a blue yeti mic is selected as the input.

Expected results:

No crackling

Comment 1

[Negritas Sergiu, Desktop QA]

Hello! I have tried to reproduce the issue using firefox 112.0a1 (2023-03-08) on MacOS 12.6 but unfortunately I wasn't able to reproduce it on my end.
Could you please answer the following questions in order to further investigate this issue?

1. Does this issue happen with a new profile? Here is a link on how to create one: https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles
2. Does this issue happen in the latest nightly? Here is a link from where you can download it: https://www.mozilla.org/en-US/firefox/channel/desktop/
3. Do you have any addons installed if so can you list them?

Comment 2

[John Doe]

(In reply to Negritas Sergiu from comment #1)

Hello! I have tried to reproduce the issue using firefox 112.0a1 (2023-03-08) on MacOS 12.6 but unfortunately I wasn't able to reproduce it on my end.
Could you please answer the following questions in order to further investigate this issue?

1. Does this issue happen with a new profile? Here is a link on how to create one: https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles
2. Does this issue happen in the latest nightly? Here is a link from where you can download it: https://www.mozilla.org/en-US/firefox/channel/desktop/
3. Do you have any addons installed if so can you list them?

1. Yes, this issue happens when creating a fresh profile
2. Yes, this issue happens in the latest nightly
3. Yes, I only have Adblock Plus installed

For what it's worth, the mic starts off recording with no problems for the first minute and then after two minutes of continuous recording it is very noticeable there is static in the background. And after a little longer it becomes unbearable. One moment and I will attach screenshots of my mic devices.

Comment 3

[John Doe]

Attachment: MIDIaudiodevices.png

Here are my mics attached to my Mac. I have three and only the Blue Yeti is giving static problems

Comment 4

[John Doe]

Attachment: Record (online-voice-recorder.com).mp3

Here is a recording of me playing a youtube video through my speakers and recording it through the blue yeti mic. This should give you an exact idea of the problem. After 30 seconds you start to hear the audio get some static. After a minute and fifty seconds towards the end, you can't even make out anything. Completely fubar.

This was recorded on the latest nightly build you linked to.

Comment 5

[BugBot [:suhaib / :marco]]

The Bugbug bot thinks this bug should belong to the 'Core::WebRTC: Audio/Video' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 6

[Negritas Sergiu, Desktop QA]

Hello John Doe!

Thank you for the reply, I'm still not able to reproduce this on my end. I will mark this Issue as NEW in order to get our developers involved.

Comment 7

[Michael Froman [:mjf]]

Paul, is this something you have time to look at?

Comment 8

[Paul Adenot (:padenot)]

We've completely rewritten our macOS backend (in part because of issues like this), please retry (for no in Firefox Nightly and Beta).