[AudioI] FlatMax stereo board does not pass input tests.

[tom abcd]

Did some more tests and the mic on the board is working, but did notice the
test script gives an error on the record   "play Warn alsa: can't encode
0-bit Unknown or not applicable."

Also noticed the spectrogram.mic.png shows on the screen before the
headphones play the test sound.

Thanks
Tom


On Mon, Apr 11, 2022 at 1:57 PM tom abcd <tom.abcd at gmail.com> wrote:

> I have a FlatMax Stereo board that uses the WM8731 chip.
> The board will play audio fine out the headphones but I have not been able
> to get the Mic to work.
> I have installed the scripts and have run the audioInjector-test.sh
> file.   I have connected up the Red/White audio cables and placed the
> headphones by the mic.
>
> When the test runs the spectrogram.png comes up with nothing in it and the
> spectrogram.mic.png comes up with lots of noise.
> I can hear the test sound from the headphones.
>
> This is running on a RPI Compute 4 module on the Compute Module 4 IO
> board.
> So what to try next?
>
> Thanks
> Tom
>
>
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