RE: [linux-audio-user] Full Duplex woes - Linux-audio-user

25 Feb 2003

Kai,

    Sorry.  I forgot about ecasound.  I haven't used it myself but from what I've
heard it's the most stable multitracker around.

Jan

-----Original Message-----
From:	&quot;linux-audio-user-admin(a)music.columbia.edu&quot;
&lt;linux-audio-user-admin(a)music.columbia.edu&gt; on behalf of	"Kai Vehmanen"
&lt;kai.vehmanen(a)wakkanet.fi&gt;
Sent:	Tue, 25 Feb 2003 12:53:07 +0200 (EET)
To:	"Audio-User" &lt;linux-audio-user(a)music.columbia.edu&gt;
Subject:	Re: [linux-audio-user] Full Duplex woes

On 24 Feb 2003, Jan "Evil Twin" Depner wrote:

...
  I am assuming that this means Linux.  I have only done
multitrack
 recording with SLab and Ardour.  If you're going to just record two
 tracks of 16 bit 44.1KHz at once (while playing other tracks) SLab is
 pretty good (it actually has some very nice effects built in).  If you
 want to handle more tracks or more resolution you'll have to use Ardour
 or something else.  Ardour is *not* trivial to set up (check my web page
 http://myweb.cableone.net/eviltwin69/ALSA_JACK_ARDOUR.html). 
Don't forget ecasound (w/ ALSA):
ecasound -a:mon -i drums.wav -o alsa,default \
	 -a:rec1,rec2 -f:16,2,44100 -i alsa,default \
	 -a:rec1 -f:16,1,44100 -o first_rec_channel.wav \
	 -a:rec2 -erc:2,1 -f:16,1,44100 -o second_rec_channel.wav

... with OSS you just replace 'alsa,default' with '/dev/dep' and
it'll
work (assuming your OSS drivers support full-duplex).

... with JACK it's even easier:
ecasound -a:mon -f:16,1,44100 -i drums.wav -o jack \
	 -a:rec1 -i jack -o first_rec_channel.wav \
	 -a:rec2 -i jack -o second_rec_channel.wav

... you'll have to use qjackconnect or jack_connect to connect the port to 
the soundcard ports.

.. more examples at:
http://www.wakkanet.fi/~kaiv/ecasound/Documentation/examples.html

And ecasound *is* trivial to set up. :)

--
 http://www.eca.cx
 Audio software for Linux!