Subject: Re: [ecasound] Ecasound multitrack recording
From: Martin O'Loughlin (martino_an_AT_yahoo.com)
Date: Mon Mar 03 2003 - 11:04:20 EET
--- Martin O'Loughlin <martino_an_AT_yahoo.com> wrote:
> --- Julien Patrick Claassen <julien_AT_c-lab.de> wrote:
> > On Mon, 3 Mar 2003, Mikko Nummelin wrote:
> > > On Sun, 2 Mar 2003, Julien Patrick Claassen
> > >
> > > > Hello all!
> > > > I'm using a m-audio delta 1010lt soundcard
> > would like to do a
> > > > multitrackrecording. Consider the foloowing
> > idea:
> > > > I wanna record guitar and keyboard at the
> > time. But I want to store the
> > > > results of those instruments in different
> > so I can postprocess them
> > > > seperately. Is this possible and if how?
> > >
> > > Two or more soundcards attached to different
> > chains, and still beware
> > > synchronization problems. Some very expensive
> > soundcards might have
> > > multiple microphone and line-in channels also.
> > >
> > >
> > Yes, I know that it might be possible with two
> > more soundcards attached
> > to different chains, but how about doing it with
> > one. With my delta 1010lt. I
> > heard, that someone had to open all channels at
> > once, because the
> > alsaplugin-devices wouldn't work. Now I'm trying
> > figure out, how I can
> > attach inputs 1/2 to chain a1 and inputs 3/4 to
> > chain a2. How exactly would
> > that be done? I think it won't be a good idea to
> > something like:
> > ecasound -a:a1 -f:16,10,44100 -i alsahw,0,0
> > -f:16,10,44100 -i
> > alsahw,0,0 -a:1 -f:16,2,44100 -o a.wav -a:2
> > -f:16,2,44100 -o b.wav
> > I think it simply doesn't work.
> > Kindest regards
> > Julien
> In fact, this cannot work as you have not told
> ecasound which channel to take the two files from.
> I have the delta 1010lt and have checked th
> recording with no trouble.
> Once you specify -f 16,2 44100 you are automatically
> reading all input channels.
of course i meant -f 16,10,44100
While i am here the other thing (maybe a bit more
efficient, would just be to write directly the first
tracks to one four track file. After all, that way
they will be together, in sync..
> and should thus assume
> that you have now 10 input channels which can be
> referred to by number.
> so. then to take the first two channels to a.wav and
> the second two to b.wav you need to split off the
> first two tracks say and stick them in a.wav, and
> second two into b.wav.
> I do not know have the syntax at hand,
> overall the structure should probably be,
> ecasound -f:16,10,44100 -a 1,2 -i alsahw,0,0
> -a:1 ""split first two tracks off and write to "
> -f:16,2,44100 -o a.wav
> -a:2 "Split second two tracks (3,4) and write to
> -f:16,2,44100 -o b.wav
> hope this helps/works
> Martin O'Loughlin
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