Sound Devices - USBPRE 2 - Status ? - Linux-audio-user

19 Sep 2014

On 09/16/2014 03:17 PM, Paul Davis wrote:
...
  >On Tue, Sep
16, 2014 at 4:12 AM, Hans Wilmers <hanswil at notam02.no ><mailto:hanswil at
notam02.no>> wrote: >>On 09/16/2014 09:55 AM, Hans Wilmers wrote:
>>>The USBPre2 works fine with UAC2 on recent kernels. >>With Fedora 19,
kernel 3.14.17, I get these samplerates: >32000/44100/48000/88200/96000/192000
>>>I have to moderate that a bit: >I can set up all sample rates as above, but
the effective sample >rate as shown by qjackctl is max. 48000. >No error message is
shown in case the effective sample rate is not >the chosen one. >>>JACK asks
ALSA for the nearest sample rate available. It does not print >errors when they do not
match. > >OK, I understand. The max. samplerate we get through Alsa is 48000
then. > / Hans 
Hello.

Can you try to record 30 second of anything higher than 48khz and check the file with
Audacity or Mplayer ? - mplayer -identify file.wav - or whatever is your most loved
application. 

By the way, the 48khz Max, are 16 bits or 24 bits ? You have the choise of this
quantization between 16 or 24 bits ? 

The - almost - last word  : What we can do from here...this card support UAC2 but refuse
to announce itself correctly and Gnu/Linux/Alsa perfectly support UAC2 ..... Any solution
? Begging Sound Devices to update 10 lines of code in a new firmware ? Asking someone at
Alsa-project to make a patch if possible ? Any clue anyone ? 

Best.