Re: [ecasound] channel manipulation

From: Julien Claassen <julien@email-addr-hidden>
Date: Wed Sep 26 2012 - 12:30:12 EEST

Hello Patrick!
   Untested, but should work:
ecasound -f:16,3,44100 -a:1,2,3 -i test.wav \
   -a:1 -chmix:1 -a:2 -chmute:2 -chmove:1,2 \
   -a:3 -chmute:1 -ea:-100 -chmove:2,3
   -a:all -o test-out.wav
   Will generate a 3-channel output wav, with: ch1: mono-mixdown of right and
left. ch2: left channel, ch3: right channel inverted.
   I think you wanted a mix of the right inverted channel with the left? So in
-a:3 use a -chopy:3,2 at the end.
   If you want the normal right channel as well, it will be four chains, in in
chain 3, you will have:
-a:3 -chmute:1 -ea:-100
   and in chain 4, the normal right:
-a:4 -chmute:1 -chmove:2,3
   Though, depending on what you expect as output volumes, I'd use an overall
decrease in amplitude. So at the beginning, directly after test.wav have
something like -ea:50 .
   I hope this helps. It looks a lot like you want to have this strange
surround stereo format, that some CDs use and that I hadn't been able to
decode once. :-)
   Best wishes


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Received on Wed Sep 26 16:15:02 2012

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