Some interesting stuff, for the tech-savvy people:
-
Real-time Audio on Embedded Linux, April, 2011
https://elinux.org/images/8/82/Elc2011_lorriaux.pdf -
ASoC: Supporting Audio on an Embedded Board, 2016
https://elinux.org/images/b/b5/Belloni-alsa-asoc.pdf -
Porting custom audio codec in Linux BSP 2018
http://gopinaths.gitlab.io/post/audio_codec_in_linux/ -
Multiple Soundcards with Jack
http://jackaudio.org/faq/multiple_devices.html