mixerctl.conf(5) [netbsd man page]

MIXERCTL.CONF(5)					      BSD File Formats Manual						  MIXERCTL.CONF(5)

NAME

     mixerctl.conf -- audio mixer configuration file

SYNOPSIS

     mixerctl.conf

DESCRIPTION

     The /etc/mixerctl.conf file consists of mixerctl(1) variables to set at boot time.  Each line of mixerctl.conf has the following format:
	   variable=value

     To generate a mixerctl.conf from the current mixer settings, execute:
	   mixerctl -a > /etc/mixerctl.conf

     Set mixerctl to YES in rc.conf(5) to have the variables set at boot time.	Additionally, you can have the settings saved and restored for the
     devices of your choice by listing them in mixerctl_mixers in rc.conf(5).

FILES

     /etc/mixerctl.conf

EXAMPLES

     Example mixer settings for an esa(4) audio adapter:

     outputs.master=255,255
     outputs.master.mute=off
     outputs.mono=255
     outputs.mono.mute=on
     outputs.mono.source=mixerout
     outputs.headphones=255,255
     outputs.headphones.mute=off
     outputs.tone=255,255
     inputs.speaker=255
     inputs.speaker.mute=off
     inputs.phone=191
     inputs.phone.mute=on
     inputs.mic=191
     inputs.mic.mute=on
     inputs.mic.preamp=off
     inputs.mic.source=mic0
     inputs.line=191,191
     inputs.line.mute=on
     inputs.cd=191,191
     inputs.cd.mute=on
     inputs.video=255,255
     inputs.video.mute=off
     inputs.aux=255,255
     inputs.aux.mute=off
     inputs.dac=191,191
     inputs.dac.mute=off
     record.source=mic
     record.volume=255,255
     record.volume.mute=off
     record.mic=0
     record.mic.mute=off
     outputs.loudness=off
     outputs.spatial=off
     outputs.spatial.center=0
     outputs.spatial.depth=0

SEE ALSO

     mixerctl(1), rc.conf(5)

HISTORY

     The mixerctl.conf configuration file first appeared in NetBSD 2.0.

BSD
								   April 5, 2003							       BSD

UAUDIO(4)						   BSD Kernel Interfaces Manual 						 UAUDIO(4)

NAME

     uaudio -- USB audio device driver

SYNOPSIS

     uaudio* at uhub?
     audio*  at audiobus?

DESCRIPTION

     The uaudio driver provides support for USB audio 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).	The following types of units are handled by the uaudio driver and are accessible via the
     mixer (see audio(4)) interface:
	mixer	      A mixer has a number of inputs and one output.  Each input has a control that determines its volume in the output.  The name
		      of the control is mixN-S, where N is a number that identifies which mixer it is and S which input.
	selector      A selector unit selects one of multiple audio sources such as mic-in and line-in.  The name of the control is
		      selN-S1S2S3..., where N is a number that identifies which selector unit it is and the sequence of Sn indicates candidate
		      units for the audio source.
	feature       A feature unit changes the sound in some way, like bass, treble, mute, or volume.  The name of the control is determined in
		      a heuristic way.	If the unit changes the sound to a speaker output terminal, the names of the controls may be out-
		      puts.speaker.bass, outputs.speaker.treble, outputs.speaker.mute, outputs.speaker, or likewise.
	processing    A processing unit does one of a number of audio processing functions (e.g., channel up-down mixing, Dolby ProLogic, or cho-
		      rus effects).  The name of the on-off control is proN.M-enable, where N is a number that identifies which processing unit it
		      is and M which kind.  Depending on the type of processing unit there may be other controls as well.
	extension     An extension unit performs some unspecified audio processing The name of the on-off control is extN-enable, where N is a
		      number that identifies which processing unit it is.

     For more information the USB Audio class specification is indispensable reading.

SEE ALSO

     audio(4), usb(4)

     USB Approved Class Specification Documents, http://www.usb.org/developers/devclass_docs/.

HISTORY

     The uaudio driver appeared in NetBSD 1.5.

BUGS

     There is no support for multiple-endpoints audio stream, adaptive recording, async playback, and TYPE-II/III formats.

     There is the possibility that a device has multiple mixer items which have the same name.

BSD
								September 20, 2011							       BSD