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