Manual Reference Pages - SND_UAUDIO (4)
- USB audio and MIDI device driver
To compile this driver into the kernel, place the following lines in your
kernel configuration file:
.Cd device sound
.Cd device usb
.Cd device snd_uaudio
Alternatively, to load the driver as a module at boot time, place the
following line in
driver provides support for
audio class devices and
MIDI class devices.
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.
USB Audio Class Specifications
driver first appeared in
.Fx 4.7 .
This manual page was adopted from
and modified for
.An Hiten Pandya Aq hmp@FreeBSD.org .
only supports synchronous device detach.
That means all mixer and DSP character devices belonging to a given
USB audio device must be closed when receiving an error on a DSP read,
a DSP write or a DSP IOCTL request.
Else the USB audio driver will wait for this to happen, preventing
enumeration of new devices on the parenting USB controller.
Some USB audio devices might refuse to work properly unless the sample
rate is configured the same for both recording and playback, even if
only simplex is used.
currently doesnt support the full set of USB audio mixer
Some mixer controls are only available as
Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.