Re: channel manipulation

On Thu, September 27, 2012 5:33 pm, Julien Claassen wrote:
> Hello Patrick!
>    For a start, you said this:
> ecasound ... -a:1,2,3,4,5,6,7,8 -i test.wav \
>    Later on you said this:
> -a:7 -i loop,1 ...
>    for that to work, you MUST remove "7" from the original list of chains,
> because it should input loop,1 and not test.wav.

Doh! I should have spotted that one.

>    Then what do you want to copy channel 5 to channel 6 for in chain 8? I
> assume, that your input file is stereo. So chain 8 (having test.wav as
> input)
> only has a channel 1 and 2.
>    If you want chain 7 to get input from loop,1 and mixdown to channel 5
> and
> then copy that mixdown to channel 6, you can use a direct chcopy:5,6 after
> the
> -chmix:5, if I'm not mistaken. So no need for chain 8 in this scenario.
>    Perhaps, this also helps you infinitely running engine. This is usually
> a
> sign for a live input or a null input, which of course can both take in
> input,
> until your system crashes or disk is full. :-)
>    I hope, that helps a little.

Very helpful actually. But I'm still getting an infinite running engine.

Here's what I have now.

ecasound -f:16,6,48000 \
-a:1,2,3,4,5,6 -i TEST_1-2.aif \
-a:1 -chmute:2 \
-a:2 -chmute:1 \
-a:3 -chmix:3  \
-a:4 -chmix:4  \
-a:5 -chmute:1  \
-a:6 -chmute:2 \
-a:5,6 -o loop,1 \
-a:7 -i loop,1 -chmix:5 -o loop,2 \
-a:8 -i loop,2 -chmix:6 \
-a:all -o test-out.wav

I have also tried this suggestion:

ecasound -f:16,6,48000 \
-a:1,2,3,4,5,6 -i TEST_1-2.aif \
-a:1 -chmute:2 \
-a:2 -chmute:1 \
-a:3 -chmix:3  \
-a:4 -chmix:4  \
-a:5 -chmute:1  \
-a:6 -chmute:2 \
-a:5,6 -o loop,1 \
-a:7 -i loop,1 -chmix:5 -o loop,2 -chcopy:5,6 \
-a:all -o test-out.wav



--
Patrick Shirkey
Boost Hardware Ltd

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