When I went to configure my audio devices in
Settings > Audio > Capture> Record Test, I was having trouble testing my microphone. I was recording test audio, playing it back, and hearing nothing. Turns out it was my audio output device that was messed up, but I had no indication/way of knowing.
I suggest adding a microphone meter when recording test audio so you know if it is capturing microphone even when you have output device wrong.
In addition, you could also show volume meter changing when playing back your test recording under “Output Volume” so you know how close your output volume is to hitting your peak.