PinePhonePro-VoiceCall.conf has wrong values in "ADC Capture Volume" and "Mono ADC Capture Volume"
I did try all major Phosh distros and with most of them Pinephone Pro mic was WAY too low so no one can't hear me in calls. This issue is with Manjaro, Arch and Mobian. postmarketOS was only one where callaudio was working out of the box.
This is currently setup in PinePhonePro-VoiceCall.conf
# Set capture volume to 0dB so modem audio doesn't overdrive the ADC
cset "name='ADC Capture Volume' 47"
cset "name='Mono ADC Capture Volume' 47"
Microphone is okay with postmarketOS and these lines are like this:
# Set capture volume to 0dB so modem audio doesn't overdrive the ADC
cset "name='ADC Capture Volume' 160"
cset "name='Mono ADC Capture Volume' 160"
So I think these need to be changed? With all three distros microphone will work as expected if I do this change.
(Expect there is issue when you someone calls you when PPP is suspended and you answer to it - it will make microphone quite much lower and I have no idea why - but it is another topic, I think?)