mahjongg wrote:Biggest hurdle to overcome is that the RPI has no audio in.
You have basically two choices:
Add a USB soundcard, but that means you also have to add a powered hub.
patch together a I2S serial sound interface from signals that are available at different points on the R-PI board (I2S isn't officially supported) and write or borrow or otherwise obtain a I2S sound driver for the PI. Connect the I2S bus to a codec chip of your choice and write or borrow or otherwise obtain a driver for that particular chip.
Now you can write or borrow or otherwise obtain the rest of the software you also obviously need.
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