Teensy audio #1
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Reference: foss-mixer/planning#1
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24-Bit: https://forum.pjrc.com/threads/27215-24-bit-audio-boards (See pdf)
Reduce issues with the chip of the above board: https://web.archive.org/web/20230101205253/https://openaudio.blogspot.com/2017/03/teensy-audio-board-self-noise.html
Driver for above board: https://github.com/MichaelTayler/SuperAudioBoard
Chip source: https://www.mouser.de/ProductDetail/Cirrus-Logic/CS4272-CZZ?qs=bUPhaerQQeFJ1zuA2RyoOw%3D%3D
Repo of board: https://github.com/whollender/SuperAudioBoard
Higher sample rate experiment: https://forum.pjrc.com/threads/38753-Discussion-about-a-simple-way-to-change-the-sample-rate?p=121460&viewfull=1#post121460Teensy Audio Library: https://github.com/PaulStoffregen/AudioDemo: https://www.youtube.com/watch?v=om9yePUsYpsPossibly move to https://www.mouser.de/ProductDetail/Cirrus-Logic/CS42448-CQZ?qs=bUPhaerQQeGUnfo%252BYCcmZw%3D%3D for more channels and cheaper chip
Seems like cirrus is discontinuing the chip. https://www.mouser.de/ProductDetail/Texas-Instruments/PCM3168APAP?qs=XGzIaZb%2FFYLbI2tx1znCxA%3D%3D may work as a replacement (probably not software compatible though)
Dual Potentiometers for the EQs
https://www.mouser.de/ProductDetail/Alps-Alpine/RK09L124000Z?qs=fQ8kcZGzY5XvGyzlPd%2FK1w%3D%3D