[Tutor] PyAlsaAudio with Multiple Sound Cards?

[Michael Lange]

On Fri, 20 Oct 2006 18:13:04 -0400
"Rick Sterling" <rick__sterling at hotmail.com> wrote:

> 
> Hi.
> 
> I am pretty new to Python, but am trying to get up to speed so I move over 
> to Python from Perl.  One progam I wrote in Perl I am trying to re-write in 
> Python. It controls the mixer settings on my sound card.  I managed to 
> rewrite most of it by borrowing and stealing from the mixertest.py included 
> with PyAlsaAudio.
> 
> I haven't been able to figure out on thing however.  I know that normally 
> when you assign the mixer with:
> 
> mixer = alsaaudio.Mixer("Master")
> 
> It seems to use the first card in the system.  My system has two sound 
> cards, and I can't figure out how to access the second card.  Digging around 
> online I found the following syntax:
> 
> mixdev = alsaaudio.Mixer(mixer, id, device)
> 
> I don't know what values it expects for id and device.  I have tried using 0 
> for the id and using "hw:1" for the device to no avail.  I am sure it is 
> something simple, but after trying many different things I still haven't 
> been able to figure out how to access my second sound card.
> 

Hi Rick,

isn't there any documentation for pyalsaaudio? If no, maybe you would be better off
using ossaudiodev, which works well with ALSA, too.
For the device question, I guess they might want something like device=/dev/snd/hwC0D0
or however these device files are named on your system.

I hope this helps

Michael