Re: [LAU] status usb2 for sound

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@email-addr-hidden> 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@email-addr-hidden
> http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user

_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@email-addr-hidden
http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
Received on Thu Nov 5 20:15:01 2009