arecord

Sound recorder for ALSA soundcard driver. More information: https://manned.org/arecord.

Record a snippet in "CD" quality (finish with <Ctrl c> when done):

arecord -vv --format=cd {{path/to/file.wav}}

Record a snippet in "CD" quality, with a fixed duration of 10 seconds:

arecord -vv --format=cd --duration={{10}} {{path/to/file.wav}}

Record a snippet and save it as an MP3 (finish with <Ctrl c> when done):

arecord -vv --format=cd --file-type raw | lame -r - {{path/to/file.mp3}}

List all sound cards and digital audio devices:

arecord --list-devices

Allow interactive interface (e.g. use <Space> or <Enter> to play or pause):

arecord --interactive

Test your microphone by recording a 5 second sample and playing it back:

arecord -d 5 test-mic.wav && aplay test-mic.wav && rm test-mic.wav