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Play-through Support
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Play-through Support


  • Subject: Play-through Support
  • From: Ethan Funk <email@hidden>
  • Date: Mon, 21 Mar 2005 14:57:54 -0700

Does any one know which, if an audio interfaces currently support The CoreAudio playthough device properties?

I need to be able to use kAudioDevicePropertyPlayThru, kAudioDevicePropertyPlayThruVolumeScalar, and kAudioDevicePropertyPlayThruStereoPan to create a low latency monitor channel that will track the gains/balance of the real mix. And I need an interface to play with to make my code work.

I also need to understand how to use kAudioDevicePropertyPlayThruDestination and kAudioDevicePropertyPlayThruDestinations to set things up. I am assuming for example that kAudioDevicePropertyPlayThruDestinations would return the four stereo mix busses on a MOTU interface if the driver does support it. Is this correct? If so, it appears that only a single destination can be set for an input to play through, and in the case of MOTU, a single output pair for the mix bus, correct?

Thanks,
Ethan...
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