[linux-audio-user] USB again

Victor Lazzarini Victor.Lazzarini at nuim.ie
Tue Jan 24 10:22:24 EST 2006

The USB card does not have mixer elements, so nothing can be
done about it. I've heard that M-audio cards took some liberty
with the USB spec and so they weren't very well supported.

In sequence, I tried a M-Audio quattro. This still has the
same Jack problems, but when using alsa or oss directly it
works in full-duplex. However, the quality is not great and it
clips easily. In other words, not very usable.


At 15:09 24/01/2006, you wrote:
>Victor Lazzarini wrote:
>>Jack can't configure capture channel (or playback), in fact Jack
>>doesn't work at all with that device. It says it can't set the hardware
>>sample formats. This is also a problem with Alsa, using hw:num.
>>The device works on playback through alsa plughw and OSS
>>emulation. But when trying
>>to get input from plughw:num, nothing happens (no sound).
>>It's very fishy.
>Have you checked the input volume with 'alsamixer'?
>About Jack, I have a Zoom G2 guitar fx and for some reason I have to plug 
>it in after the boot to get it seen by alsa.
>Anyway I thought the snd-usb-audio module worked with any 'native USB 
>compatible' card.
>>At 14:21 24/01/2006, you wrote:
>>>Victor Lazzarini wrote:
>>>>Dear all,
>>>>it turns out that my device, USB Audiophile, does not seem to
>>>>be able to capture audio, which makes it almost useless for me.
>>>>Now the question is: Can you suggest a reliable USB soundcard
>>>>that works well with Alsa in full-duplex? Say between Eur200-400?
>>>Are you sure it doesn't work with capture? What does jack say?
>>>Maybe you don't have reading permission on the device. Try chmod a+r or 
>>>setting up a group for audio and adding your user.
>>>>thanks a lot
>>>>Victor Lazzarini
>>>>Music Technology Laboratory
>>>>Music Department
>>>>National University of Ireland, Maynooth
>>Victor Lazzarini
>>Music Technology Laboratory
>>Music Department
>>National University of Ireland, Maynooth

Victor Lazzarini
Music Technology Laboratory
Music Department
National University of Ireland, Maynooth 

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