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PulseAudio - Wikipedia
https://en.wikipedia.org/wiki/PulseAudio#:~:text=In%20broad%20terms%20ALSA%20is%20a%20kernel%20subsystem,more%20sources%20%28processes%2C%20capture%20devices%2C%20etc.%29%20is%20created.
What is the relation between ALSA and PulseAudio sound ...
https://askubuntu.com/questions/581128/what-is-the-relation-between-alsa-and-pulseaudio-sound-architecture
As far as I know, ALSA is a package of many sound card drivers, and PulseAudio is a audio application that operate the sound data like mixing or equalizer. But why there is a control bar called PCM in the panel of alsamixer.
What Is Jack, Pulseaudio, and Alsa? Linux Audio Drivers ...
https://www.youtube.com/watch?v=iaPW5v2ztEQ
When you're getting into Linux audio, you'll hear a lot of talk about Alsa, Jack, and Pulseaudio. What are they? Are these all drivers? How do I use Jack? Wh...
Noob’s Guide to Linux Audio: ALSA, OSS, and Pulse Audio ...
https://linuxhint.com/guide_linux_audio/
The job of PulseAudio is to pass sound data between your applications and your hardware, directing sounds coming from ALSA to various output destinations, such as your computer speakers or headphones.
Pulse Audio vs ALSA vs audio server vs audio device driver ...
https://unix.stackexchange.com/questions/631746/pulse-audio-vs-alsa-vs-audio-server-vs-audio-device-driver
ALSA contains the actual device drivers (in the kernel source), and a library to access those drivers. You use sound perfectly fine with just ALSA alone. PulseAudio implements an additional audio routing level on top of ALSA, including volumes and conversions. Most distros use the PulseAudio + ALSA combo as the default.
How do you use both Pulse Audio and Alsa? - Ask Ubuntu
https://askubuntu.com/questions/147981/how-do-you-use-both-pulse-audio-and-alsa
ALSA is the kernel level sound mixer, it manages your sound card directly. ALSA is a crap (seriously) and it can handle a few (sometimes just one) channel. PulseAudio is a software mixer, on top of the userland (like you'd run an app). When it runs, it uses Alsa's channel and manages EVERY mixing stuff, devices, network devices, everything by itself.
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