On Mon, 2007-01-22 at 21:13 -0500, Lee Revell wrote: > On 1/22/07, ram <ram@xxxxxxxxxxxxxxx> wrote: > > I can confirm the RME HDSP 9632 cards and add-ons also support hardware mixing. > > They work really well too I may add. > > I stand corrected. Mark was right - these devices do have hardware > mixing, they just implement it in an odd way, probably to keep the > interface similar to other OS. its not true to say that with ALSA, they support what is commonly understood as h/w mixing. you cannot do independent open's of several subdevices and get the output of each subdevice mixed down to the outputs. yes, they do have a very powerful h/w matrix mixer, but it is not accessible via a series of independent subdevices. it also is not supported by the ALSA mixer API at this time. --p
