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Re: 5.1 Surround-to-stereo AU
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Re: 5.1 Surround-to-stereo AU


  • Subject: Re: 5.1 Surround-to-stereo AU
  • From: Brian Willoughby <email@hidden>
  • Date: Fri, 6 Feb 2009 02:03:39 -0800


On Feb 5, 2009, at 23:44, tahome izwah wrote:
2009/2/5 William Stewart <email@hidden>:
What do you mean by "encoder"

Encoder for us is something like an AAC or MP3 encoder (and these formats
have nothing to do with audio units, but you do this with audio codecs)

My plug in encodes audio from surround channels into a stereo signal.

By 'encode' do you mean that some kind of 'decoder' (standard or proprietary) can later extract the surround channels again? Is the stereo signal listenable on a 2-channel system? Can it be mixed further like any other stereo signal? Or does it become an encoded bit stream that sounds like white noise? I get the impression that what you're doing is down-mixing and not encoding, at least not by any standard definition of encoding.



I have found the "Down Mixer" AU in Logic which does exactly what I
need but doesn't get listed by that name if I do "auval -a". Any idea
what the real name of this AU and its AU type are so I can duplicate
that behaviour?

Are you sure that's an actual AudioUnit and not one of the private Logic plugins? I couldn't find it myself, until I looked in the 1,000 page manual. I'm quite certain that is not an AU - it's proprietary to Logic and not available elsewhere. Logic has its own plugin format, like VST, MAS, RTAS, etc.


Brian Willoughby
Sound Consulting

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  • Follow-Ups:
    • Re: 5.1 Surround-to-stereo AU
      • From: tahome izwah <email@hidden>
References: 
 >5.1 Surround-to-stereo AU (From: tahome izwah <email@hidden>)
 >Re: 5.1 Surround-to-stereo AU (From: William Stewart <email@hidden>)
 >Re: 5.1 Surround-to-stereo AU (From: tahome izwah <email@hidden>)
 >Re: 5.1 Surround-to-stereo AU (From: William Stewart <email@hidden>)
 >Re: 5.1 Surround-to-stereo AU (From: tahome izwah <email@hidden>)

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