Did you find the solution or did the engineers actually give you the valid solution to this issue? I'm having the same issue which is critical because this is a OS-level silent failure. https://developer.apple.com/forums/thread/775307

I'm sorry this is off-topic but, I see your code for getting the PID from an AudioObjectID process: int getAudioProcessPID(AudioObjectID process) How do you obtain the AudioObjectID process parameter in the first place when an application starts using the microphone?

Unallocated error