using two sound cards

David Bruzos david at bruzos.org
Tue Dec 21 19:01:39 EST 2004


Hi Chuck:
I am not sure why you are getting the /dev/dsp1 errors when using sox.  
On my box, the play and rec commands work well with both sound cards 
using the "-d" option to tell sox what card to use.  However, I agree 
with Janina, you should try to use the alsa interface to your soundcard 
whenever possible.  I use mplayer to play audio and ecasound to record 
it.  They both have good CLI interfaces and good support for the alsa 
sound system.  Oh, ecasound can also play sound at the same time that it 
records, and it can play multiple sound files via different sound cards 
at the same time too.  You should really take a look at it.  It is 
a little tricky to use though.

David B.

On Tue, Dec 21, 2004 at 05:24:32AM -0500, Chuck Hallenbeck wrote:
> Is anyone using two sound cards on one computer? I am trying to figure
> out how one sends audio to a specific card. The "play" command has no
> options to control output destination that I can find, and the "aplay"
> command documentation is so bad that I cannot figure out how to make the
> "-D" option work. I have not looked closely at other applications yet.
> 
> Any tips about using a dual sound card system would be greatly
> appreciated, on list or off list, whichever.
> 
> Chuck
> 
> 
> -- 
> The Moon is Waxing Gibbous (77% of Full)
> "Things are in the saddle, and they ride mankind." Ralph Waldo Emerson
> Personal site www.hhs48.com, Download site www.mhcable.com/~chuckh
> 
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