Hi guys! I understood yesterday that the Raspberry Pi 3 is limited to only 2-channel 16-bit PCM audio over HDMI by its ALSA driver. Therefore I'm now looking for another board capable of at least outputting 6x 24-bit LPCM 48 kHz channels.
My goal is to build a software DSP, processing multi-channel audio recorded from an USB audio interface.
The idea is to capture a home-cinema receiver pre-outs, mix and apply biquads for crossover with the sub and speaker tuning, then handle the clock difference between input and output.
A couple threads mention difficulties with 24-bit audio, on legacy kernel and over I2S, where the user Christos observed issues.
Do you know if multichannel 24-bit audio over HDMI now works with Allwinner H3 boards? If so which one would you recommend to make this software DSP?
Or maybe another board supported by armbian has a working ALSA driver for multi-channel 24-bit audio over HDMI? Thanks