On Fri, 6 Dec 2002, Clemens Ladisch wrote:
> John S. Denker wrote:
> > As requested:
> >
> > 1) lsusb
> > Unknown line at line 1809
> > Duplicate HUT Usage Spec at line 2650
> > Bus 001 Device 001: ID 0000:0000 Virtual Hub
> > Bus 001 Device 003: ID 041e:3000 Creative Labs
>
> Oops. I forgot to tell you to use "lsusb -vv". But don't bother, the od
> output suffices for now.
>
> > 2) The od is attached as a .txt file.
>
> The descriptors announce the following capabilities:
>
> interface 0: various (mixer) controls
> interface 1: output 16 bits at 48 kHz, 2 channels
> interface 2: input 16 bits at 8/16/24/32/48 kHz, 2 channels
> interface 3: output AC-3 at 44.1/48 kHz
>
> ... and that's it.
>
> Now when I look at the specifications at
> <http://www.soundblaster.com/products/extigy/specs.asp> it turns out that
> Creative isn't outright lying, only being _extremely_ misleading: the page
> says that the ADC and DAC are capable of converting 24 bit data at 96kHz,
> but it does _not_ say that this bit depth and/or samping rate can be used
> to playback or record data from/to the computer. (It says the SPDIF input
> can do 24@96, but that's of no use if this format cannot be sent over the
> USB bus.)
>
> 6-channel output is supported with AC-3 only, but the driver currently
> doesn't support AC-3.
>
>
> To summarize: Where it matters, the Extigy does neither 24 bits nor 96kHz.
> For professional audio, you have to go elsewhere.
Another big joke from the Creative PR staff ;-((
Patrick, could you add this info to USB device web pages?
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs
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