aid:
OK, last one, and sorry for the spam. excited to get this working. wifi noise totally eliminated by setting the mic mux inputs to Mic 1 Amp Source MUX [MIC_P] and Mic 2 Amp Source MUX [MIC_N]. my alsamixer state with this configuration is attached below. Run it with sudo alsactl restore -f stereo_mic_config.state
;-)
this imbalance (mic_p vs. mic_n) is the reason, why iqaudio do not advertise this card as stereo. It's the same on the iqaudio codec+ card.
btw: I'm currently testing a pi zero /w iqaudio zero + stereo mics on a usb battery. we're hitting a full day soon and there seems plenty of capacity left.
bests. udo
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