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Re: How to select channel on multi-channel output device
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Re: How to select channel on multi-channel output device


  • Subject: Re: How to select channel on multi-channel output device
  • From: Bob Ingraham <email@hidden>
  • Date: Fri, 13 Feb 2009 13:09:55 -0700 (MST)

I have a 24 channel audio output device (a MOTU 24IO,) and I wanted
to assign one Audio Queue per output channel, so I could play different
mp3 files on each channel for a multi-language Music-On-Hold application.

Hence the need to be able to select a specific audio output channel for playback, per thread.

I was using Audio Queue Services, but was then told by Bill Stewart that "We don't really have a way to do this at the moment with audio queue".

Since I have hit a dead-end with Audio Queue Services, I hope someone can point me to the appropriate Core Audio API I should use to accomplish this task.

The Core Audio API is so vast I just don't know where to go next.

Any pointers gratefully accepted.

Bob

----- Original Message -----
From: "Jeff Moore" <email@hidden>
To: "CoreAudio API" <email@hidden>
Sent: Friday, February 13, 2009 12:21:19 PM GMT -07:00 US/Canada Mountain
Subject: Re: How to select channel on multi-channel output device

The answer to that question depends entirely on which CoreAudio API
you are using to play your audio.

On Feb 13, 2009, at 9:53 AM, Bob Ingraham wrote:

> I have a multi-channel output device.
>
> Right now, I can play audio out the first channel.
>
> But is there a way in the CoreAudio API to override this and select
> a different channel for output?



--

Jeff Moore
Core Audio
Apple


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 >Re: How to select channel on multi-channel output device (From: Jeff Moore <email@hidden>)

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