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alsamixer/README

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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 is by Jaroslav Kysela <perex@jcu.cz>
+This document is by Paul Winkler <zarmzarm@erols.com>