Ken Restivo wrote: > On Mon, Nov 08, 2010 at 10:13:04AM +0100, Clemens Ladisch wrote: > > Ken Restivo wrote: > > > 3) Has FOUR outputs and 2-4 inputs, all usable from within JACK, with > > > good professional quality DAC/ADCs. > > > > This would mean full duplex and 24-bit samples, which would exceed the > > bandwidth available for full speed devices. > > That seems odd, since there seem to be a lot of very cheap USB 1.0 > devices that can support 6 channels (5:1 surround for home theater). Full speed has just barely enough bandwidth for eight channels of 16-bit samples at 48 kHz. This could be 7.1 output, or 6 outputs + stereo input, or 4+4 outputs/inputs. With 24-bit samples at 48 kHz, there's bandwidth for five channels overall, i.e., 4 output channels, or full-duplex stereo. With 24-bit samples at 96 kHz, there's bandwidth for two channels, i.e., stereo output _or_ stereo input. Regards, Clemens _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
