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Re: maximum channels in IOAudioStreamFormat?
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Re: maximum channels in IOAudioStreamFormat?


  • Subject: Re: maximum channels in IOAudioStreamFormat?
  • From: Jeff Moore <email@hidden>
  • Date: Mon, 26 Feb 2007 16:01:38 -0800

There are no upper bounds on the number of channels you can have.

That said, you'll need to be a bit more verbose about what you are doing and how you are measuring it before we can give you any advice.

On Feb 26, 2007, at 3:55 PM, Brett G wrote:

I'm trying to initialise an IOAudioStream to have 64 channels. I find
I can add formats up to 32 channels, but when I increase the number
above 32 channels, I am given 2,4,8,16 and 32 channel formats by
default - with sample rates 44.1,48k,88.2,96k, 176.2 and 192k -
regardless of the number of channels in the format and regardless of
the sample rate settings too.

Is there a problem having a single stream with this many formats?
"setFormat" is not returning an error and I can't see why it would be
behaving in this way.


--

Jeff Moore
Core Audio
Apple




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References: 
 >maximum channels in IOAudioStreamFormat? (From: "Brett G" <email@hidden>)

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