Anyone thought of using for instance a pi Zero for digital sound processing and then communicate real time audio over SPI to the main Pi4 e.g. for radio sound. This will maybe take off a huge load off the main Pi4 if you understand what I'm saying The Pi Zero with connected the Codec Zero as a audio capture device could then act as a DSP and transmit the audio over SPI to the main Pi4 that is utilized with the Radio software to take the load off the Pi4 for DSP, thus a lot less load on the Pi4.
Jason, do you know of anyone trying this kind of setup to enhance the analog audio of the radio? My Pi4 build with your BAP and Isolating the Pi4 is almost finished. Just the final lipstick for cooling etc. I am still using the USB sound dongle as audio device for DAC and ADC between my FT-897D and the Pi but if I use the Pi Zero for DSP it maybe could took off some lad off the Pi4. Do you know if JS8Call, WSJTX, FLDigi and Winlink will accept this configuration on the audio?
This is because audio will and is always an headache on the Linux distro's.
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73 de Eugene / ZR4EM
ZR4EM / Eugene
km4ack