TL;DR: Yep, the electric circuit shows that the microphone is powered off on mute.
…now that I think of it, an easier approach without needing to decap chips would be to probe the microphone’s traces with the power on and off. This approach is more conclusive though.
Yes, that would tell you whether you could get a signal from the mic at that moment, but not whether the power to the mic is under software control.
TL;DR: Yep, the electric circuit shows that the microphone is powered off on mute.
…now that I think of it, an easier approach without needing to decap chips would be to probe the microphone’s traces with the power on and off. This approach is more conclusive though.
Yes, that would tell you whether you could get a signal from the mic at that moment, but not whether the power to the mic is under software control.