2006/2/16, conrad berhörster <conrad.berhoerster@xxxxxx>: > well, i have 2 soundcards and want to capture from both at the same time > with > jack. i don't need sample sync (or such bad things ;=) ) only need the > signal, each channel individual but into one app, i have written. Two explain Pauls Jedi-magic: If you use jack, you want sample-sync. If you don't want sample-sync and just want to record two independent streams into your software (assuming you don't want to use it for music[*]) you just have to open both sounddevices the alsa way and process according to the alsa-interface. [*] If you want to do music with it, you want sample-sync... Enough things have been said about way two soundcards without syncing can't be used as one multichannel device, so I won't repeat it here. I just want to add another trick I learned from my hardware-dealer who syncs ISDN-cards: Maybe its not enough to just couple their clocks, they also change the driver to mask the IRQ's from the slave cards and just react on the master-IRQ and then the driver automaticly proccesses the data on all cards. Speaking in the audio-speach of el-cheapo-multichannel: It's not enough to solder the crystals together, there may be a need to modifiy the driver. Of course this would make a new soundcard out of it which exposes its multi-channels to jack directly through the alsa-interface, no need for .asoundrc-fiddling... I haven't tested that but I think if it works for ISDN-cards it should work with soundcards too. Arnold -- visit http://dillenburg.dyndns.org/~arnold/ --- Wenn man mit Raubkopien Bands wie Brosis oder Britney Spears wirklich verhindern könnte, würde ich mir noch heute einen Stapel Brenner und einen Sack Rohlinge kaufen.
