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MAN PAGE: ALSAMIXER(1)Contents
alsamixer - soundcard mixer for ALSA soundcard driver,
with ncurses interface
alsamixer [options]
alsamixer is an ncurses mixer program for use with the
ALSA soundcard drivers. It supports multiple soundcards
with multiple devices.
alsamixer [options]
Options
-h, -help
Help: show available flags.
-c <card number>
Select the soundcard to use, if you have more than
one. Cards are numbered from 1 (the default).
-m <device number>
Select the soundcard device to control, if your
card has more than one. Devices are numbered from 0
(the default). Not to be confused with the sound
card mixer channels, which are sometimes also
referred to as "devices", just to be annoying. Many
soundcards will only have device 0. Some more com
plex cards may have more. This flag corresponds to
the -d flag for amixer, arecord, and aplay.
-e Start in "exact mode." This will affect the numbers
you see displayed for volumes, but does not affect
operation of the level controls. The default
behavior is to show levels in percent from 0 to
100. This is easy to read, but can mislead you
about how much control the soundcard actually lets
you have. Exact mode, on the other hand, shows you
the settings as the soundcard itself understands
them. In exact mode, each channel level is between
0 and a power of 2 minus one (e.g. 0-7, or 0-63).
Exact mode may also be toggled while alsamixer is
running, by using TAB. alsamixer recognizes the following keyboard commands to
control the soundcard.
General Controls
The Left and right arrow keys are used to select the chan
nel (or device, depending on your preferred terminology).
You can also use n ("next") and p ("previous").
The Up and Down Arrows control the volume for the cur
rently selected device. You can also use + or - for the
same purpose. Both the left and right signals are
affected. For independent left and right control, see
below.
M toggles muting for the current channel (both left and
right). You can mute left and right independently by using
, and . respectively.
SPACE toggles recording: the current channel will be added
or removed from the sources used for recording. This only
works for valid input channels, of course.
R toggle display of playback or record mixer.
L re-draws the screen.
TAB toggles the mode for volume display. See description
for the -e flag above.
Quick Volume Changes
PageUp increases volume by 10.
PageDown decreases volume by 10.
Home sets volume to maximum.
End sets volume to 0.
You can also control left & right levels for the current
channel independently, as follows:
[Q | W | E ] -- turn UP [ left | both | right ]
[Z | X | C ] -- turn DOWN [ left | both | right ]
If the currently selected mixer channel is not a stereo
channel, then all UP keys will work like W, and all DOWN
keys will work like X.
Exiting
Quit the program with ALT Q, or by hitting ESC.
amixer(1), arecord(1)
There is no help screen implemented yet. Some terminal
emulators (e.g. nxterm) may not work quite right with
ncurses, but that's their own damn fault. Plain old xterm
seems to be fine.
alsamixer has been written by Tim Janik <timj@gtk.org> and
been furtherly improved by Jaroslav Kysela
<perex@suse.cz>.
This manual page was provided by Paul Winkler
<zarmzarm@erols.com>.
25 Nov 1998 3 |
