New subject: [linux-audio-user] parameters needed for managing

10 Jun 2004

Hi Robert,

I'm here again to bother you guys on this nice mailing list: I configured
BruteFir that, as Robert supposed, can handle more than one soundcard.
I can run BruteFir, but I have a problem: when I activate more than one
soundcard by BruteFir I can hear some "POPS" coming out from my speaker.
Everything is fine activating only one soundcard.

The soundcards are properly installed and connected by internal wordclock
cable: so two cards are slaved to the master one clock (this is done by HW
settings, I cannot find any information about how to set one card as master
and others as slaves, which is required, for example, under Windows).
A CD player is connected to S/Pdif input of master soundcard, and this card
is setted up by Envy24 Control utility to generate internally a 44100Hz
clock, while others inputs are empty.

I tried to set the card to get the clock signal form s/pdif, but BruteFir
returns a "broken pipe error" with this setup.
This setting can be made only on one card by Envy24 Control utility: I do
not know if it is normal dueing to internal clockword connection between
cards.

I was wondering if "glueing" my three cards into one card as Robert
suggested could solve the "POPS" problem.
Unluckily I have no idea about how to do it, I'm quite new in Linux world
and any help would be really appreciated!

Thank you very much in advance to everyone who can help!
Michele

...
  > Hi guys,
 >
 > I installed Suse 9.1 with 3 Terratec EWS88D soundcars: Alsa properly
 > recognize the 3 cards installed (3 Ice1712 divers are loaded), now I'm
 > using BruteFir which require to set the Alsa's parameters for managing
with
...
   multiple
soundcards. 
 Oh, sounds like a nice setup.

 >
 > The parameter is:
 >
 > hw:0,0
 >
 > if you have a 1 card system, now does someone know how this parameters work
...
   with 3
soundcards?
  I think it is specified as: <devicetype>:<device>,<subdevice>

 So in your case the devicetype you wish to use is hw, the device is 0->2 and
...
  subdevice depends entirely if the card HAS subdevices
and if you wish to use
...
  them, I think it probably best to leave it at 0.

 so:
 hw:0,0 (first card)
 hw:1,0 (second card)
 hw:2,0 (third card)

 As I understand you brutefir supports natively to use several cards. If this
...
  is not the case then it IS possible to glue the cards
together so they form
...
  one "card". This requires .asoundrc trickery
that is beyond most peoples
 abilities though ;)

 /Robert 

Re: [linux-audio-user] parameters needed for managing