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mozilla / cubeb

Cross platform audio library
ISC License
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Audio Observation: Duolingo.com + AirPods Max #699

Closed Anonymous1845973 closed 2 years ago

Anonymous1845973 commented 2 years ago

I've recently bought a pair of Apple AirPods Max (APM).

I learn Spanish on Duolingo daily, and while using the APM I noticed a static noise when the language was spoken back through Firefox v 98.0.1 running Mac OS 11.6.1

The static didn't replicate in any other instance, and was isolated to Firefox.

Today I've used the APM in Chrome to use Duolingo and the static did not replicate.

Evidently there is an audio compression issue or bug in Firefox - I have emailed the engineers at Duolingo as Im curious as to why this is, no response yet.

If anyone can explain WHY on the above basis, I would love to learn.

Hopefully this serves someone in the future that may also come across this! Still continue to use and support Firefox.

kinetiknz commented 2 years ago

Thanks for filing a bug! It's possible this is bug 1714448. It's probably best to file a new bug against Firefox regarding your issue, as the underlying cause may be anywhere from Duolingo's app to somewhere within Firefox.

jaredkhan commented 2 years ago

I have been experiencing something very similar with Duolingo on Mac OS 12.3, regardless of what speakers I use. It is not just at the beginning of the audio file but throughout so unlikely to be a duplicate of that one, @kinetiknz

I was googling trying to figure out what text-to-speech they use, since it didn't sound like the system one, and came across 'Amazon Polly'. Sure enough, if I generate a file with this Amazon Polly test app: https://ai-service-demos.go-aws.com/polly it has this irksome buzzing behaviour on Firefox 99.0.1 but not Safari or Chrome.

Reproduction files outside of Duolingo context

Possibly related bug on the tracker: crackles while playing audio samples on duolingo.com website in Ubuntu

@Anonymous1845973, did you open a bug with Firefox?

Anonymous1845973 commented 2 years ago

@jaredkhan doesn't look I did direct, reported the bug here and on r/Firefox on Reddit

kinetiknz commented 2 years ago

Thanks, having a sample file will make debugging much easier. There was an issue in Firefox 99 (bug 1759325) that is fixed in 100 onwards, so please confirm you're seeing this with the current release version.

Let's use https://bugzilla.mozilla.org/show_bug.cgi?id=1764161 for the Firefox bug.

jaredkhan commented 2 years ago

Ah yeah my bad, if I get the pre-release version 100, this problem goes away both for the file I shared and, as far as I can tell, Duolingo in general. Cheers!

padenot commented 2 years ago

I'm closing this, because it was not a cubeb bug (and it's already fixed in Firefox). Thanks for reporting and confirming that it's fixed!