> Note that if you plan to use Jack Connection Kit with Rivendell, Jack > requires all the clocks on all the sound cards to be locked together. > ALSA has a feature that can attempt to lock some independent cards > together. I've never tried it but folklore says it doesn't work very > well. Jack requires this because it then can then allow you to mix two > or more signals together to a single output very cleanly without > resampling, buffering, or added latency. So this is why a single > multiple channel device (that then should run from a single clock) is > better than several independent ones.
I seem to recall reading a hack somewhere that walked you through how to connect multiple identical consumer-based sound cards up to the same clock. Essentially it involved removing the clock crystal from all but 1 sound card, and soldering a small piece of coax between the cards that had the crystal removed to connect them up to the card that still had a crystal. Then all the cards would sync to the single crystal, eliminating the clock issues you otherwise run into when using more then 1 sound card. While it might be a fun project, especially if you've got a number of identical sound cards sitting around, I'm not sure I'd want to take the time and effort to try and do this for a production unit. It just seems easier to me to purchase a card with multiple outs. _______________________________________________ Rivendell-dev mailing list [email protected] http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
