VPIO Audio Ducking

Hey y'all, I'm new here and in the process of building some audio software. I'm hitting a roadblock trying to incorporate VPIO into audio playback states without it ducking what's currently playing in my DAW.

I have a few questions:

  • Can VPIO other-audio ducking be completely disabled on macOS, beyond fixed/minimum? Minimum is not enough for professional audio environments.
  • Is attenuation of an unrelated application routed through a different Core Audio output device expected?
  • Is split-device VPIO—built-in microphone input with Apollo/Universal Audio output—supported?
  • Why can AVAudioEngine.start() succeed while the engine remains stopped and immediately emits a configuration-change notification?

Thanks for any insight into this!

VPIO Audio Ducking
 
 
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