Re: [ecasound] writing multiple files

Aaron, actually you are right ... That previous code was accepted by
ecasound, but didn't give the right results.

funny you should answer, because the test file that I am converting is
actually your Stravinsky recording! .. I am decoding that one so that
I can compare it to your decodes you sent me ages ago (which I still
have not listened to but will do and send you feedback!).

I concur on your choice of ecasound for processing multi-channel content...

Etienne

On 5/12/07, Aaron Heller <heller@email-addr-hidden> wrote:
> Hi Etienne...
>
> Actually, I think there is a remaining error. Chains 2,3,4, and 5 are four
> channels each and the -f:16,1,44100 simply says to write the first channel
> of the chain to the file. So I think you will get four identical files,
> each containing LFront.wav.
>
> The fix is to do some channel copying in the output chains.
>
> ...
> >> -a:2 -f:16,1,44100 -o LFront.wav \
> >> -a:3 -f:16,1,44100 -o RFront.wav -erc:2,1 \
> >> -a:4 -f:16,1,44100 -o LBack.wav -erc:3,1 \
> >> -a:5 -f:16,1,44100 -o RBack.wav -erc:4,1
>
> -erc:2,1 says replace channel 1 in the chain with channel 2, and so forth.
> I think -erc has been superceded by -chcopy in newer versions of ecasound.
> I'll warn you that I'm writing this from memory and have not tried it.
>
> Best regards,
>
> Aaron
>
> --
> Aaron Heller <heller@email-addr-hidden>
> Menlo Park, CA US
>
>
> On 5/11/07 3:58 AM, "e deleflie" <edeleflie@email-addr-hidden> wrote:
>
> > jeepers, would you believe my only error was the missing slash at the
> > end of the line!
> >
> > BTW ... I was at first frustrated learning ecasound's syntax .... but
> > now , as I get to know it better, I like it more and more ... in
> > combination with ladspa plugins, its a really powerful tool ...
> >
> > please keep up the work!
> >
> > Etienne
> >
> >
> > On 5/11/07, e deleflie <edeleflie@email-addr-hidden> wrote:
> >> Hi,
> >>
> >> I am trying to send a 4 channel file to a ladspa effect, and then
> >> write the 4 resultant tracks as independent files .... I'm having
> >> problems routing the output of the LADSPA effect into 4 separate
> >> tracks ... this is what I have (which seems to break at the loop
> >> business):
> >>
> >> ecasound \
> >> -a:1 \
> >> -f:16,4,44100 \
> >> -i:resample,auto,WXYZ.wav \
> >> -el:Ambisonics-square-decoder,0,1,1.44,1.44,500,2 \
> >> -o:loop,1 \
> >> -a:2,3,4,5 -i:loop,1 \
> >> -a:2 -f:16,1,44100 -o LFront.wav
> >> -a:3 -f:16,1,44100 -o RFront.wav
> >> -a:4 -f:16,1,44100 -o LBack.wav
> >> -a:5 -f:16,1,44100 -o RBack.wav
> >>
> >> (BTW: that ladspa plugin takes 4 channels in and spits out 4 channels)
> >>
> >> can anyone see what I am doing wrong?
> >>
> >> Etienne
> >>
> >
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>
>

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Received on Sat May 12 04:15:03 2007