commonvoice.mozilla.org - recorded audio stutters

[yaomtc]

URL: https://commonvoice.mozilla.org

Browser/Version: 83.1.0

Operating System: Android 11 (GrapheneOS)

What seems to be the trouble?(Required)

• Something else (Add details below)

Steps to Reproduce

1. Navigate to: (site url)
2. Record audio
3. Hear crackling and stutters, despite microphone audio working fine outside of Firefox

Expected Behavior:
Audio should sound similar to audio recorded using Audio Recorder app

Actual Behavior:
Crackles and stutters are practically unavoidable

[softvision-oana-arbuzov]

Thanks for the report, but I'm not able to reproduce the issue. For me the sound is clear. I spoke and recorded the 5 sentences and after I listened to them.

Tested with:
Browser / Version: Firefox Nightly 201221 (🦎 86.0a1-20201218095607)
Operating System: Samsung Galaxy S8 (Android 9) - 1440 x 2960 pixels, 18.5:9 ratio (~570 ppi density)

@Vanco-Mycen could you try clearing cache/data/cookies, or use a clean profile, and check again?

[yaomtc]

Have you tried replaying a recording before you've recorded all five, or re-recording? This for me is consistently where the problem starts. If I go and record all five without replaying or re-recording, it's fine.

[softvision-oana-arbuzov]

@yaomtc, at first I did record all five and then replay them.
I tried now to record one and replay, but still did not hear crackles or stutters.

Tested with:
Browser / Version: Firefox Nightly 210204 (🦎 87.0a1-20210203093146), Firefox Release 85.1.1 (🦎 85.0.1-20210127184413)
Operating System: Samsung Galaxy S6 Edge (Android 7.0) - 1440 x 2560 pixels (~577 ppi pixel density),

Are you able to share de recording, maybe I'm missing something?
Does it still occurs to you?

[yaomtc]

It's still happening for me. I think it actually occurs from re-recording, not from replaying. Recording #5 only sounded like that after I re-recorded. I will test again.

screen-20210206-114845_1.mp4

[yaomtc]

I had a hell of a time trying to screen capture more with audio successfully attached, so I gave up and just recorded it with my tablet's camera.

https://mega.nz/file/2dEX0YDY#RalK1V8eFFADqIsu2GlB4fRI_FjRKgVE9k_Ck9Xu_M8

Worth mentioning that often this issue doesn't happen until a good number of re-records. This clip starts from scratch.

[softvision-oana-arbuzov]

Thanks for the extra info, I understand the problem now, unfortunately I still can't reproduce it on my side.

Tested with:
Browser / Version: Firefox Release 85.1.3 (🦎 85.0.2-20210208133944)
Operating System: Samsung Galaxy S8 (Android 9) - 1440 x 2960 pixels, 18.5:9 ratio (~570 ppi density), Huawei P20 Lite (Android 8.0.0) - 1080 x 2280 pixels, 19:9 ratio (~432 ppi density)

@yaomtc could you try with a clean profile? Does the behavior reproduce on Chrome?
@karlcow or @ksy36 any luck reproducing this (noise and text repetition) on your side?

Meanwhile while testing on Firefox Nightly I found an issue related to "recording replay", it stops after a few seconds on Firefox. I reported the issue #67243

[yaomtc]

I just did this on a fresh install of Firefox Beta, and was able to reproduce it. On Vanadium (Chromium-based browser that comes with GrapheneOS) I'm not able to get any repeating, but there is some crackling. It doesn't make the audio unintelligible, though. I'll get a capture of that.

[yaomtc]

I suppose this could be an issue I need to report to GrapheneOS / the maintainer for the Pixel 4a.

https://mega.nz/file/2dEX0YDY#RalK1V8eFFADqIsu2GlB4fRI_FjRKgVE9k_Ck9Xu_M8

[softvision-oana-arbuzov]

I see, thanks for the info, we'll give a few more tries on our side too @softvision-raul-bucata could you also check on your device with Firefox Daylight or Beta?

@yaomtc if you can come up with an exact pattern/steps to reproduce (recorded 1st text, then replayed it and recorded again and replayed it, then moved to the next text) that would also be useful, but it also could be related to the mobile device used for testing it too.

[softvision-raul-bucata]

@softvision-oana-arbuzov I could not reproduce the issue on my side. Audio recordings are clear, with no crackling or stutters. The result is the same after replaying a recording before recording all fives or re-recording audio.

Tested with:
Browser / Version: Firefox Daylight 85.1.3 (85.0.2-20210208133944)/ Firefox BETA 86.0.0-beta.5 (86.0-20210212222924)
Operating System: OnePlus 6 (Android 10) - 2280 ×1080 pixels, 19:9 ratio (~402 ppi density)

[softvision-oana-arbuzov]

Thanks Raul.
There is a repository for issues on Common voice: https://github.com/common-voice/common-voice/issues
@yaomtc I've created an issue there common-voice/common-voice#3019 maybe there is more luck there.