Re: Deinterleave using ExtendedAudioFile

Subject: Re: Deinterleave using ExtendedAudioFile

From: David Paterson <email@hidden>

Date: Tue, 20 Mar 2007 09:38:50 -0400

Delivered-to: email@hidden

As I drove home last night I thought about this more and realized I misunderstood what you were saying here. This is deceptively simple and elegant, but it still leads me to a question. I see clearly in the header files how to set the channel map if I am using AudioConverter, but there is no obvious way to do it if I am using ExtendedAudioFile. In ExtendedAudiFile I can set Channel Layout tags - but they don't seem to help much.

Again, thanks for any help.

David Paterson

On Mar 19, 2007, at 6:27 PM, William Stewart wrote:

You can use the ExtendedAudioFile API (see the ConvertFile code in /Developer/Examples/CoreAudio/SimpleSDK/)

The only bit not covered in this is using the channel map property (to say which channel you do/don't want). So in the case of the mono file, this would be 1 UInt32 int, with either 0 (the first channel) or 1 (the second channel) to come from the file for your mono file

Bill

On 16/03/2007, at 4:18 PM, David Paterson wrote:

I know I am going to feel stupid. Everywhere I search it implies that this is easy but I can not figure out how to do it. I simply want to take an interleaved stereo file and convert it to 2 mono files. I tried looking at afInterleave to see if I could reverse the process - but I couldn't figure it out. If anyone can point me in the right direction I would greatly appreciate it.

David Paterson

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References:
	>Deinterleave using ExtendedAudioFile (From: David Paterson <email@hidden>)
	>Re: Deinterleave using ExtendedAudioFile (From: William Stewart <email@hidden>)