This really depends on the driver, I would think. Some drivers are setup for single input at a time, as the most common usage model is for voice conferencing. But i can see where this would be useful from a recording studio perspective. The trick would be to have the recording program enable the correct capture pathways, which can be driver independent. It also can be a hardware limitation, like with some sound chips on the HDA-Intel bus. Some of them may have multiple paths for input through pin reassignment, but only 1-2 ADC's. for actual capture. If you let us know exactly what hardware you have, the developer(s) for that system may be able to better answer. Tobin On Mon, 2007-12-10 at 17:20 +0100, Christophe Osuna wrote: > Hi, > > I would like to capture sound from the Line and Mic inputs > simultaneously. The sound chip seems capable to do so: inside > alsamixer, in the "Capture" tab I can select up to three subdevices, > and from the "Playback" tab I can set the input source one to "Mic" > and the input source two to "Line" (and three to whatever). > > When trying to use several output ports at the same time I use four, > six or eight channels. I tried the same thing for input (i.e. use four > channels) but that failed. I guess I have to use subdevices but I have > no idea on how to start working with them. > > Could anyone: > * tell me if ALSA is limited to two capture channels, and in that > case what should be done; > * point me to some documentation showing what to do, or give me some > general hints > > Thanks. > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@xxxxxxxxxxxxxxxx > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel -- Tobin Davis Win98 is called Win98 because 98 bugs have been added since the last version _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
