[PlanetCCRMA] working with Quattro

Juan Reyes juanig@ccrma.Stanford.EDU
Thu Aug 28 19:38:01 2003

Once modules have loaded, you can check them with:

cat /proc/asound/devices
cat /proc/asound/devices

(You should have MIDI and four channels of audio)

I start Jack with the following command:
jackstart -d alsa -d hw -r 44100
jackstart −−realtime −−driver=alsa −−device=hw:0 -r 44100
in order to have realtime priority,

and then you can start pd just with the pd command. The only problem is
that devices specified in  ~/.asoundrc seem to be broken either with
jack or PD and I am only able to get 2 Channels of input/output. I was
not able to get four channels with Pd even without jack.

The good news is that Ecasound seems to work with very low latency and
four channels in the Quattro by doing:
ecasound -i test.wav -f 32,4,44100 -o q4

provided you have the .asoundrc file in your home diretory. 

Ecasound can also work with jack, again only two channels in/out by
doing something like:
ecasound -f:32,2,44100 -i new.wav -o jack_alsa

  --* Juan

On Thu, 2003-08-28 at 08:54, Oded Ben-Tal wrote:
> I'm having problems using the m-audio Quattro sound card. It wokrs fine 
> using clm/snd but I can't get PD and cdplay through it (Playing CD I tired 
> both the alsaplayer and kscd). I'm running RH9, anyone with experience of 
> the subject?
> thanks
> Oded
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