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Using Alsamixer
===============
Alsamixer uses an ncurses interface, which may not display properly in
an xterm.
Start it by typing "alsamixer".
Optional flags:
alsamixer -h displays the available flags.
alsamixer -e starts in "exact" mode. See below...
alsamixer -c N selects the soundcard to control, where N is the number of
the card, counting from 1.
alsamixer -m selects which mixer device to control, counting from 0. This
is only applicable to soundcards that have more than one mixer to
control. It is the same as the amixer -d flag.
Keyboard commands:
==================
Left & right arrow keys are used to select the channel (or device,
depending on your preferred terminology). You can also use n (next)
and p (previous).
Up/down arrows control the volume for the currently selected device.
Both the left & right signals are controlled.
You can also use "+" or "-" to turn volumes up or down.
"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 on valid input channels,
of course.
"L" re-draws the screen.
TAB does something interesting: it toggles the mode for volume display.
This affects the numbers you see, but not the operation of the level
controls. There seem to be two modes: one is percentages from 0-100, the
other is called "exact mode" and varies from channel to channel. This
shows you the settings as the soundcard understands them. All the channel
level ranges are from 0 to a power of 2 minus one (e.g. 0-31 or 0-63).
Quick Volume Changes
--------------------
PageUp increases volume by 10.
PageDown decreases volume by 10.
Home sets volume to 100.
End sets volume to 0.
You can also control left & right levels for the current channel
independently,
according to this chart:
Q | W | E <-- UP
-------------
Z | X | C <---DOWN
^ ^ ^
| | +-- Right
| |
| +--- Both
|
Left
If the current mixer channel is not a stereo channel, then all UP keys
will work like W, and all DOWN keys will work like X.
Exiting
=======
You can exit with ALT + Q, or by hitting ESC.
-----------------------------------------------------------------
Alsamixer has been written by Tim Janik <timj@gtk.org> and
been furtherly improved by Jaroslav Kysela <perex@perex.cz>.
This document was provided by Paul Winkler <zarmzarm@erols.com>.
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