Skip site navigation (1)Skip section navigation (2)

FreeBSD Man Pages

Man Page or Keyword Search:
Man Architecture
Apropos Keyword Search (all sections) Output format
home | help
SND_UAUDIO(4)	       FreeBSD Kernel Interfaces Manual		 SND_UAUDIO(4)

NAME
     snd_uaudio	-- USB audio and MIDI device driver

SYNOPSIS
     To	compile	this driver into the kernel, place the following lines in your
     kernel configuration file:

	   device sound
	   device usb
	   device snd_uaudio

     Alternatively, to load the	driver as a module at boot time, place the
     following line in loader.conf(5):

	   snd_uaudio_load="YES"

DESCRIPTION
     The snd_uaudio driver provides support for	USB audio class	devices	and
     USB MIDI class devices.

     A USB audio device	consists of a number of	components: input terminals
     (e.g. USB digital input), output terminals	(e.g. speakers), and a number
     of	units in between (e.g. volume control).

     Refer to the `USB Audio Class Specification' for more information.

SEE ALSO
     sound(4), usb(4)

     USB Audio Class Specifications,
     http://www.usb.org/developers/devclass_docs/.

HISTORY
     The snd_uaudio driver first appeared in FreeBSD 4.7.

AUTHORS
     This manual page was adopted from NetBSD 1.6 and modified for FreeBSD by
     Hiten Pandya <hmp@FreeBSD.org>.

BUGS
     The PCM framework in FreeBSD, as of this writing, does not	handle device
     un-registrations in a properly abstracted manner, i.e., a detach request
     is	refused	by the PCM framework if	the device is in use.  It is necessary
     to	allow the device un-registration to complete successfully, otherwise
     the PCM layer will	panic.

FreeBSD	10.1		       February	24, 2011		  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY | AUTHORS | BUGS

Want to link to this manual page? Use this URL:
<http://www.freebsd.org/cgi/man.cgi?query=snd_uaudio&sektion=4&manpath=FreeBSD+10.0-RELEASE>

home | help