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Remove audio feedback with ad1940(dsp)

Hi everyone

It is currently designed with 4 microphone inputs and 2 line outputs.

DSP CHIP AD1940 (4 mic inputs) + (1 line output feedback input) = 5 total.

I'm testing with SIGMASTUDIO and it's not working.

1. IN/OUT MUTE when there is no microphone input
2. Automatically remove audio feedback

I'm planning on designing like this, so please help.