[PD] m-audio quattro and alsa

Daniel Hawthorn junk at icdc.com
Mon Feb 24 15:41:23 CET 2003

Do you have your .asoundrc configured?  I use the one directly off the 
alsa site at 

(see bottom of the page.)  If you have that, then you can do:

      pd -alsadev quattro

...and not worry about actual hw: names.  This should give you all four 
channels by default.

A question as well:

Does anyone else with a quattro get a lot of noise on the input lines in 
PD?  I get all sorts of noise on input that sounds for all the world 
like I'm getting an 8-bit stream from the ins.  Any ideas?


august wrote:
> Hi list,
> I noticed some of you out there also have an m-audio quattro.
> just curious, how do you get pd to recognize all 4 channels at once.
> every combination of "pd -channels 4"  recognizes just 2 channels and
> spits out:
> 	snd_pcm_hw_params_set_channels (input): Invalid argument
> 	snd_pcm_hw_params_set_channels (output): Invalid argument
> however, I can get pd to play out on the two seperate pcm's with:
> 	pd -alsa  -alsadev "hw:0,0"
> 	 &
> 	pd -alsa  -alsadev "hw:0,1"
> I can't however do this to get 4 channels:
> 	pd -alsa  -alsadev "hw:0,0" -alsadev "hw:0,1" -channels 4
> with oss emulation, its the same (only it doesn't spit out any error
> messages).
> anyone got a successful combination ?
> thanks - august.
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