aumix(1) adjust audio mixer


[-<channel option>[[+|-][<amount>]]|<level>|R[ecord]|P[lay]|q[uery]] [-dhILqS] [-f <rc file>][-C <color scheme file>]


This program adjusts the settings of an audio mixing device. It can be used from the command line, in scripts, or interactively with the keyboard or mouse.



main volume
input gain
output gain
PC speaker
mix monitor
line 1
line 2
line 3

For each channel, q queries, + and - increment and decrement by one, or an amount if one is specified. If no + or - is given after the channel option, a number sets a specific level (monophonically).


-C color_scheme_file
specify the name of a file containing a color scheme. This implies -I The color scheme file may reside in the current working directory or in the data directory, typically /usr/share/aumix or /usr/share/aumix-gtk if you are using the GTK-enabled package. This option can be used to force the ncurses interface with a GTK version. No need to specify a filename in that case.
-d device_file
specify the name of the mixer device (default is /dev/mixer
-f rc_file
specify file for saving and loading settings
display information on usage
run interactively, using the full-screen ncurses-based interface. This is the default if no options are given, but must be specified in order to have go into interactive mode after doing things non-interactively.
To force use of the ncurses interface with the GTK version, specify -C (no need to give a filename).
load settings from $HOME/.aumixrc or /etc/aumixrc if the former is inaccessible
query all devices and print their settings
save settings to $HOME/.aumixrc


The command
aumix -q -v75 -m 0 -c R -c+10 -m q

prints all settings, sets volume to 75%, sets microphone to 0, sets CD to record, increases the CD level by ten (both left and right), and prints the new settings for the microphone.

The .aumixrc file containing:


sets the volume to 60%, waits five seconds, then reduces the volume to 50%. Note that "wait" lines will not be saved by aumix. They must be added by hand.


If no options are given on the command line, and is compiled with ncurses, it will run interactively.


The left bank of controls is used for adjusting levels; the right bank is for adjusting balance. Mixing channels not supported by your hardware will not be shown. Mixing channels which are stereo-capable will have balance controls.


The following keys control in interactive mode:

page up, page down, up and down cursor
select a new control.
Tab, Enter, <, >, comma and period
toggle between level and balance controls
+ , - , [ , ] , left and right cursor and digits
adjust the setting of the current device. The + and right cursor keys increase the level by 3%; the - and left cursor keys decrease it by the same amount. The [ key sets it to 0% and ] or 0 set it to 100%. The digits 1 to 9 set it to 10% through 90%. The digit 0 sets it to 100% (not 0%). The same keys work analogously on the balance controls.
toggles between record and play for controls which are capable of this.
centers the balance of the current device.
K or k
show a description of the functions of keys
L or l
load settings from $HOME/.aumixrc falling back to /etc/aumixrc
M or m
mute or unmute
O or o
``only'' mute all channels but the current one
S or s
save settings to the rc file
U or u
undo any muting
Q or q
end the program
refresh screen

^Z, ^D and ^C also have their normal function (the screen is refreshed when is brought to the foreground).


In interactive mode, can accept input from the mouse if gpm(8) is running and is compiled with gpm(8) support. If gpm is not running but gpm support is included, the message `mouse' off will appear at the top of the screen, and only keyboard input will be accepted. With gpm(8) running, most functions can be performed through the mouse. The mouse is active whenever one of its buttons is held down. While active, it works in the following ways:

  • over a control track, it sets the control to match the position of the mouse cursor.
  • over a record/play indicator, it toggles the record/play state.
  • over the `Quit' , `Load' , `Save' , `Keys' , `Mute' , `Only' , or `Undo' labels at the top of the screen, it causes those actions to take place.


The HOME variable is used. When is compiled with GTK+ support, DISPLAY is checked, and if set is used. LANG is used when the ncurses screen is displayed.


Saved settings for the mixer are kept in the /etc/aumixrc and $HOME/.aumixrc files, but can be kept anywhere if specified explicitly. Color schemes are normally kept in the directory given by DATADIR at compilation time, but are preferentially loaded from the current directory and can be kept anywhere so long as the path to them is specified. The format of these files is:
item foreground background

where item is one of `active' , `axis' , `handle' , `hotkey' , `menu' , `play' , `record' , or `track' and foreground and background are one of `black' , `red' , `green' , `yellow' , `blue' , `magenta' , `cyan' , or `white' The words should be separated by whitespace and can be upper-, lower-, or mixed-case. Lines not matching all these conditions are ignored. Some samples of color schemes are provided, named after the sort of terminal where they should be most suitable.

If either foreground or background is given as `-' , then the default color for that is used. If aumix is linked against ncurses, then the terminal's default fore or background will be used; else the default foreground is white and the default background is black.

An xpm icon is provided.


This page corresponds to version 2.9.1.


Suspending with ^Z may make the terminal difficult to use.