1803552 - Poor recording quality or sound level too low

Status: UNCONFIRMED

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

Description

[alexis_de-bacco]

Attachment: Firefox recording using https://online-voice-recorder.com

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:107.0) Gecko/20100101 Firefox/107.0

Steps to reproduce:

I was recording an audio sample on commonvoice, https://commonvoice.mozilla.org/, then I tried to record here https://online-voice-recorder.com/
This happened on Windows and Arch Linux with Firefox v. 107.0.1 and Firefox-developer edition v. 108.0b8 on Arch Linux

Actual results:

The record volume was unusually low, and then in another sample I recorded, my voice is deformed.

Expected results:

I was expecting a record quality as good as the one I've when I record on my computer or on another Web Browser.
Here I'll join two versions of the same recording. One by Firefox and one by audacity.

Comment 1

[alexis_de-bacco]

Attachment: Audacity reference for audio recording with Firefox using https://online-voice-recored.com

Comment 2

[alexis_de-bacco]

Attachment: Firefox recording using https://commonvoice.mozilla.org

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

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

Comment 4

[Andreas Pehrson [:pehrsons]]

I'll just note that the voice-recording app you used uses these audio constraints:
"audio":{"autoGainControl":false,"echoCancellation":true,"noiseSuppression":true}

autoGainControl:false means we won't amplify the signal to reach a decent volume
echoCancellation:true means we will apply audio processing to cancel out any echo. This will never improve the quality of the audio, unless of course there is echo, which on this site there doesn't appear to be.
noiseSuppression:true means we will apply audio processing to cancel out noise. If there is noise the signal will be cleaner, but if there is no noise originally it will never improve the audio quality either.

Do you have a recording from the other web browser you mention using that website?

Common Voice seems to use the same constraints.

What if you try https://www.rev.com/onlinevoicerecorder instead? It seems to use default constraints (with autoGainControl on, unless you've turned it off by default in prefs).

Comment 5

[alexis_de-bacco]

Attachment: Chromium recording with https://online-voice-recorder.com

Comment 6

[alexis_de-bacco]

Attachment: Audacity reference for audio recording using chromium on https://online-voice-recorder.com

Comment 7

[alexis_de-bacco]

Attachment: Audacity audio reference for Firefox on rev.com.mp3

Comment 8

[alexis_de-bacco]

Attachment: Firefox recording on rev.com.mp3

Comment 9

[alexis_de-bacco]

Attachment: Audacity audio reference for Chromium record on rev.com

Comment 10

[alexis_de-bacco]

Attachment: Audio recording chromium rev.com.mp3

Comment 11

[alexis_de-bacco]

Indeed, it seems that using Firefox and https://www.rev.com/onlinevoicerecorder works better, but still there is a difference between what I've recorded with audacity and what I've recorded on rev.com whereas there is no difference if I use chromium.
I've added more recordings to highlight the difference between Firefox and Chromium, with each time a recording I did with audacity at the same time.

Comment 12

[Andreas Pehrson [:pehrsons]]

Paul might have thoughts here.