Hi, however, there is at least one (not really commercially available) sound card which utilizes the USB2 bandwidth, but being conform to the Linux USB sound driver without any modification. This is a custom made deivce for use with hearing aid shells, see http://lad.linuxaudio.org/events/2009_cdm/Friday/07_Grimm/07.pdf for a description. In its full configuration it provides six input channels and two outputs, at 24bit/96kHz, resulting in 13500 kBit/s capture bandwidth, and 4500 kBit/s playback bandwidth. At least the input bit rate is above the USB 1.1 specification. Not to useful information, just a proof that it is possible to have USB2 sound devices which are Linux snd_usb compatible. Giso Paul Davis wrote: > On Thu, Nov 5, 2009 at 4:06 AM, Hartmut Noack <zettberlin@xxxxxxxxxxx> wrote: >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> Hello, >> >> USB1 works OK with ALSA but what is the status for USB*2*-Soundcards? >> >> I cannot find any useful info on http://www.alsa-project.org/ . So what >> are you experiences? Anybody out there working on drivers for stuff like >> this: >> >> http://de.m-audio.com/products/de_de/FastTrackUltra.html >> >> ..that is not class-compliant?? Or is it working already for anybody out >> there? > > i believe that clemens has stated previously: > > * there is no class driver for audio on USB2 for linux > * almost all USB2 audio interfaces are not class compliant > > something like that. chicken, meet egg. > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
