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Man Pages

Manual Reference Pages  -  XMMIX (1)


xmmix - Audio mixer utility for X11/Motif



xmmix [toolkitoption ...] [-dev device] [-autoload path] [-exitreset] [-debug] [-demo]


Xmmix is a program that allows the use of the mixer section of the sound card hardware supported by the VoxWare driver. See the README file in the xmmix distribution for further information about VoxWare.

There are up to ten input level sliders (Synth, PCM, Alt PCM, Line, Line-1, Line-2, Line-3, Mic, CD) and up to four output level sliders (Rec Mon, Rec Out, Speaker and Master). The Input Gain control, Output Gain control, Bass and Treble tone control sliders are also available. Each of the level sliders include a "lock" toggle button which allows the settings of the two stereo channels to be changed simultaneously or independently. The input controls also include a "rec" button (where applicable), which allows the input sources to be selected for recording. The tone control sliders have a "Flat" button which causes these controls to revert to the center setting. In addition, these controls are available: a "Mute" button to silence the audio, a "Loudness" button to engage frequency response compensation, and an "Stereo Enhance" button to set the stereo separation enhancement.

Xmmix queries the capabilities of the sound board during start-up, and will only display controls corresponding to features that are actually implemented in the hardware.

The various controls in the xmmix main window are meant to be self explanatory. Additional features include the ability to save mixer settings in a file and load it at a later time. A "Reset" feature resets all controls to their start-up settings.

While the use of a mouse is natural with xmmix, all functionality can also be operated via the keyboard. This is in conformance to the guidelines published in the OSF/Motif Style Guide from the Open Software Foundation.


All standard Xt Intrinsics toolkit options are supported. In addition, xmmix supports the following options:
-dev device
  Specifies the path name to the raw mixer device. If this option is not used, the default device used is /dev/mixer.
-autoload path
  Specifies the path name to a mixer settings file that is automatically loaded when xmmix starts. This forces all control settings to those specified in the file. If this option is not used, then the control settings will be queried from the mixer hardware itself. This option overrides the XMmix*autoLoadOnStartUp X resource.
  Causes all mixer controls to reset to their start-up state when xmmix is exiting. This option overrides the XMmix*resetOnExit X resource.
-debug Causes verbose debugging diagnostics to be printed on stderr.
-demo Invokes xmmix in "demo" mode. This causes xmmix to display all controls as if they are functional, but does not actually operate the sound hardware.


Xmmix has many adjustable X resources to customize its look and feel, as well as its behavior. Notably, the colors of virtually every feature on xmmix’s windows can be changed, as well as the text fonts.

The resource names and their defaults can be found in the LIBDIR/app-defaults/XMmix file (where LIBDIR is typically /usr/lib/X11). It is not recommended that you change values in the LIBDIR/app-defaults/XMmix file, unless you want the changes to be forced upon all users of xmmix on the system. Instead, make a copy of this file, change the copy as you see fit, then place it in your home directory. Your custom resource settings will then override the defaults when xmmix is subsequently started. Alternatively, you may also place specific resources you wish to override in the .Xdefaults file in your home directory.




Ti Kan (
AMB Research Laboratories, Sunnyvale, CA, U.S.A.

Comments, suggestions, and bug reports are always welcome.

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v1.2 XMMIX (1) 14 July 1996

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