uaudio fullduplex on 5.4-RELEASE?

Clemens Ladisch clemens at
Mon Sep 5 00:10:56 PDT 2005

Hans Petter Selasky wrote:
> Do you know of any USB audio devices that use USB 2.0?

Behringer BCA2000: completely vendor-specific.

Edirol UA-1000: capture seems to work, but playback data must be
synchronized to the capture sample rate.

SB Audigy 2 NX: uses high speed only after explicitly enabled by a
vendor-specific command, but is then almost class compliant.

> You might have to change the code a little bit, hence USB 2.0
> processes 8 times as many frames per second as USB 1.x.

Not always -- high speed iso endpoints can set bInterval, too (the
Audigy 2 NX does).


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