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Re: using AUMatrixMixer & format conversions
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Re: using AUMatrixMixer & format conversions


  • Subject: Re: using AUMatrixMixer & format conversions
  • From: John Clayton <email@hidden>
  • Date: Thu, 23 Oct 2008 10:30:09 +0200

but they all have to be of the same ASDB format, right? I saw somewhere else on this list that the mixer is pretty much just doing channel mapping, which implied that it wasn't performing format conversion.

Thanks
--
John Clayton
Skype: johncclayton




On 23/10/2008, at 3:01 AM, William Stewart wrote:

yep - the matrix mixer can be configured to any number of buses with any number of channels

On Oct 21, 2008, at 11:19 PM, John Clayton wrote:

Hi All,

I'm wondering if an AUMatrixMixer has the capability to accept different inputs on its input busses. E.g. can I put 5 channels of 44.1k into Bus 0 and 2 (stereo) channels of 8k into Bus 1 and expect things to work - or am I asking for trouble? Another way of asking this I suppose, is; will it perform the format and rate conversion tasks for me - or do I have to make sure all the input *and* output busses are set to the same format/channel and sample rate?

Reason:
I have a situation where I'm going to be feeding audio from QT movie files into coreaudio units. I'm extracting audio via the MoveAudioExtraction API, which for any given movie creates a summary mix of all of the audio tracks contained in the movie, I then need to push these into a ducking component (that I'm going to write).


Thanks
--
John Clayton
Skype: johncclayton




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