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AlsaProject
https://alsa-project.org/wiki/Main_Page
The Advanced Linux Sound Architecture (ALSA) provides audio and MIDI functionality to the Linux operating system. ALSA has the following significant features: Efficient support for all types of audio interfaces, from consumer sound cards to professional multichannel audio interfaces. Fully modularized sound drivers.
Configuring Linux sound services with ALSA | TechRepublic
https://www.techrepublic.com/article/configuring-linux-sound-services-with-alsa/
The Advanced Linux Sound Architecture (ALSA) is intended to be a replacement for the Open Sound System (OSS), which is the current standard for Linux sound services.
Container sound: ALSA or Pulseaudio - mviereck/x11docker Wiki
https://github-wiki-see.page/m/mviereck/x11docker/wiki/Container-sound:-ALSA-or-Pulseaudio
For ALSA sound just share sound devices with --device /dev/snd. You would not need the more advanced Pulseaudio setup, but will have trouble if more than one application tries to access the sound hardware. x11docker provides this setup with option --alsa. If you have an unprivileged user in container, add him to group audio with --group-add=audio.
ALSA - The RadioReference Wiki
https://wiki.radioreference.com/index.php/ALSA
In order to capture audio as a non-root user (this is very much recommended), you should add each user that will be running audio capture applications to the audio user group on the system. For liquidsoap default installations, the user account is liquidsoap. Check the documentation for your application to determine which user account it will use.
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