[PlanetCCRMA] multi card fc2

mjnoble not8ohm@iinet.net.au
Thu Jan 13 21:37:01 2005

thanks for the replies

>the 2.6 kernel version uses /etc/modprobe.conf
I thought this might be the case.

>Yes, you can do that, but for most cards the samples will fall out of sync.  
>Each card has a clock that tells it when to take a sample during analog to 
>digital conversion. So, if you have two different clocks the samples will not 
>match up.  There are a couple of different ways that you can make two cards 
>use the same clock to take samples, but they have to be supported by your card 
>at a hardware level.
no problem there as the cards are the same and have an internal sync 
cable for multi card configurations. 

I think I now need to take some time to figure how modprobe.conf, 
alsactl, envy24control, .asoundrc and asound.state interact to load the 
driver and settings at boot, and what I should do to get the 
two-cards-as-one setup going.  I'm also a little unclear as to how Jack 
handles multiple cards without setting them up as one using the 
referenced script.  at the moment it's not entirely clearly, though the 
man pages for these and the alsa wiki are helping.  If anybody can point 
me to a tutorial or webpage detailing how all these get along I would be 
much appreciated.  Otherwise, I'll keep looking and post back if I come 
to any enlightenment...