[LAD] BOSS BR-80 USB Audio

Kazutomo Yoshii kazutomo.yoshii at gmail.com
Tue Aug 9 08:53:44 UTC 2011

Hi Clemens,

You are right! Thanks!

Both the recording device and MIDI are working now.

$ arecord -f S32_LE -r 44100 -D hw:1,0 -c 2 a.wav

I got only S32_LE although AD or DA conversion is 24-bit.
Probably this is ok.

$ aplaymidi  -l
  Port    Client name                      Port name
  14:0    Midi Through                     Midi Through Port-0
  20:0    BR-80(AUDIO)                     BR-80(AUDIO) MIDI 1
$ aplaymidi -p 20:0  test.midi

I can use BR-80 as an external drum machine as well!

I just posted the patch to the ALSA ML.


On 08/08/2011 04:43 AM, Clemens Ladisch wrote:
> Kazutomo Yoshii wrote:
>> I added an entry to quirks-table.h for BR-80 (see below) and recompiled
>> the snd-usb-audio module and re-installed the module.
>> The capture interface and MIDI seems not working.
> As far as I can tell from the descriptors, interface 0 is a control
> interface, _IGNORE it.  Interfaces 1 and 2 are PCM; interface 3 is MIDI,
> but does not have standard descriptors, so you need to use
> a FIXED_ENDPOINT quirk, something like in this patch:
> http://git.kernel.org/?p=linux/kernel/git/tiwai/sound-2.6.git;a=commitdiff;h=6a6d822e12db
> If you submit the patch for inclusion in ALSA, please add
> a Signed-off-by tag (see Documentation/SubmittingPatches).
> Regards,
> Clemens

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