mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-09-20 01:59:57 +02:00
d47938eab3
* * * don't abort if snd_mixer_* functions failed due to EINTR, * we simply retry on the next cycle. hopefully asoundlib preserves * errno states correctly (Jaroslav can you asure that?). * * * feature WINCH correctly, so we make a complete relayout on * screen resizes. don't abort on too-small screen sizes anymore, * but simply beep. * * * redid the layout algorithm to fix some bugs and to preserve * space for a flag indication line. the channels are * nicer spread horizontally now (i.e. we also pad on the left and * right screen bounds now). * * * various other minor fixes. * * * indicate whether ExactMode is active or not. * * * fixed coding style to follow the GNU coding conventions. * * * reverted record volume changes since they broke ExactMode display. * * * composed ChangeLog entries.
85 lines
2.4 KiB
Text
85 lines
2.4 KiB
Text
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@jcu.cz>.
|
|
This document was provided by Paul Winkler <zarmzarm@erols.com>.
|