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Comment by imurray | Hacker News Reader

This is the quick hack I use to check my microphone is working with my browser: https://homepages.inf.ed.ac.uk/imurray2/tmp/echo_recorder.ht...

It's a self-contained page, using just javascript without sending any data anywhere. You can take a copy of the .html file and use it locally, or host it somewhere you control.

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On linux I use an alias which loads/unloads the loopback module in pulseaudio:

pactl load-module module-loopback

Thanks! Adapted into a single command-line version for an alias/script that toggles:

    pactl unload-module module-loopback 2>&1 | grep -q 'Failed' && pactl load-module module-loopback > /dev/null

I find the browser version useful too, as sometimes problems are browser-specific. E.g., the snap version of firefox has messed up permissions.

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