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Man Pages


Manual Reference Pages  -  OSSMIX (1)

NAME

ossmix - Open Sound System command-line mixer program.

CONTENTS

Synopsis
Description
Options
Usage
Selecting Mixer Device
Changing Mixer Settings
Examples
Files
See Also
Author

SYNOPSIS



ossmix [-d <dev#>] [-achqD] [control name] [value]

DESCRIPTION

ossmix is a simple command-line mixer utility that is used to display the mixer settings of physical and virtual audio devices. OSS version 4 has an extended mixer API which supports some device specific features that may not available using other mixer applications.

OPTIONS

-D Display device information.
-a Dump mixer settings for all mixers (normal format).
-c Dump mixer settings for all mixers (command format).
-h Display usage information.
-q Quiet mode.
-v[1|2] Verbose mode. -v2 prints more detailed infoamation than -v1.
ctrl# value Change value of a mixer control.
<no arg> Display current/possible settings.

USAGE

ossmix without any arguments displays the current settings of the default mixer device (usually the motherboard sound chip). This printout can also be used to find out the supported control names and their possible values. Currently all controls accept an ON/OFF value, a mono value (0 to 100) or a stereo value (left:right where both channel volumes can be between 0 and 100). The value can also be expressed in a relative form (e.g. +1 to add 1 to the previous volume). An ON/OFF control can also receive a TOGGLE value. If a control has a name in quotes following the normal output, than the name can be used instead of the control when setting a value.

The following is a sample printout produced by ossmix:



        Selected mixer 0/Creative AudioPCI
        Known controls are:
        vol <both/leftvol>[:<rightvol>] (currently 50:50)
        pcm <both/leftvol>[:<rightvol>] (currently 50:50)
        speaker <monovol> (currently 21)
        line <both/leftvol>[:<rightvol>] (currently 32:32)
        line.rec ON|OFF (currently OFF)
        mic <monovol> (currently 16)
        mic.rec ON|OFF (currently ON)
        cd <both/leftvol>[:<rightvol>] (currently 100:100)
        cd.rec ON|OFF (currently OFF)
        pcm2 <both/leftvol>[:<rightvol>] (currently 75:75)
        line1 <both/leftvol>[:<rightvol>] (currently 32:32)
        line1.rec ON|OFF (currently OFF)
        line2 <monovol> (currently 32)
        line2.rec ON|OFF (currently OFF)
        line3 <monovol> (currently 0)
        line3.rec ON|OFF (currently OFF)
        mic.micboost ON|OFF (currently ON)
        mic.micbias ON|OFF (currently ON)
        mute.pcmmute ON|OFF (currently OFF)
        mute.pcm2mute ON|OFF (currently OFF)
        mute.micmute ON|OFF (currently OFF)
        mute.cdmute ON|OFF (currently OFF)
        mute.linemute ON|OFF (currently OFF)
        mute.line1mute ON|OFF (currently OFF)
        mute.line2mute ON|OFF (currently OFF)
        mute.line3mute ON|OFF (currently OFF)

SELECTING MIXER DEVICE

It’s possible to select the mixer device by using the -d<mixernumber> command line argument. This argument (when used) should be the first one on the command line. By default the mixer number 0 will be accessed. To find the available mixer devices, type ossinfo -x and look under the Mixers heading for available mixer devices.

CHANGING MIXER SETTINGS

Changing the values is done just like with the original "mixer" applet. For example:



        ossmix pcm 50:60

The above sets the pcm control (audio playback volume) so that the left channel volume is 50 and the right channel volume is 60. With just "ossmix pcm 50" the both channel volumes will be set to 50.

In addition to the old mixer there are now some (usually ON/OFF) settings. These settings are device specific and don’t work with all soundcards. The easiest way to find them out is to start ossmix without command line arguments (other than -d#).

Some control names contain a dot ("."). This dot is required when changing the value. For example: "ossmix -d0 mic.micboost ON".


.The ossmix program has capability to listen MIDI main volume controller
.This mode is very useful if you need to make several rapid mixer changes
.To use this mode you need to give the MIDI device file and a list of the
.ossmix -d1 -m/dev/midi00 vol mic pcm line gain.out1/2 gain.in3/4
.After that the MIDI channels will be assigned in the following way:
.Other MIDI channels (6 to 15) will be ignored.
.Only mono and stereo slider type controls can be assigned to MIDI channels.
.Both stereo channels will be set to the same volume (there is no balance
.After starting ossmix you should move the sliders on the external fader box

[Include document that]

AT&T this moment only MIDI fader boxes that send only main volume change messages

EXAMPLES

ossmix vol 50 Set the vol control volume to 50. If the pcm control is a stereo control, than both channels will be set to 50.
ossmix vol 50:60 Set the vol control so that the left channel volume is 50 and the right channel volume is 60.
ossmix vol +2 Raise vol volume by 2.
ossmix -- vol +2:-2 Raise the left channel volume by 2, and lower right channel volume by 2. The "--" is needed on some systems so that the "-2" won’t be mistaken for a parameter.
ossmix micboost ON Set micboost to ON.
ossmix micboost TOGGLE Toggle micboost.
ossmix mplayer +2 Raise mplayer volume by 2. This would only work if mplayer is using the virtual mixer.

FILES

/usr/local/bin/ossmix

SEE ALSO

ossdevlinks(1), ossxmix(1), savemixer(1)

AUTHOR

4Front Technologies
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OSSMIX (1) 05 April 2016

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