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      1 Using Alsamixer
      2 ===============
      3 
      4 Alsamixer uses an ncurses interface, which may not display properly in
      5 an xterm.
      6 
      7 Start it by typing "alsamixer".
      8 
      9 Optional flags:
     10 alsamixer -h displays the available flags.
     11 alsamixer -e starts in "exact" mode. See below...
     12 alsamixer -c N selects the soundcard to control, where N is the number of
     13 the card, counting from 1.
     14 alsamixer -m selects which mixer device to control, counting from 0. This
     15 is only applicable to soundcards that have more than one mixer to 
     16 control. It is the same as the amixer -d flag.
     17 
     18 
     19 Keyboard commands:
     20 ==================
     21 
     22 Left & right arrow keys are used to select the channel (or device,
     23 depending on your preferred terminology). You can also use n (next) 
     24 and p (previous).
     25 
     26 Up/down arrows control the volume for the currently selected device.
     27 Both the left & right signals are controlled.
     28 You can also use "+" or "-" to turn volumes up or down.
     29 
     30 "M" toggles muting for the current channel (both left and right). You can
     31 mute left and right independently by using , and . respectively.
     32 
     33 SPACE toggles recording: the current channel will be added or removed from
     34 the sources used for recording. This only works on valid input channels,
     35 of course.
     36 
     37 "L" re-draws the screen.
     38 
     39 TAB does something interesting: it toggles the mode for volume display.
     40 This affects the numbers you see, but not the operation of the level
     41 controls. There seem to be two modes: one is percentages from 0-100, the
     42 other is called "exact mode" and varies from channel to channel. This
     43 shows you the settings as the soundcard understands them. All the channel
     44 level ranges are from 0 to a power of 2 minus one (e.g. 0-31 or 0-63).
     45 
     46 Quick Volume Changes
     47 --------------------
     48 
     49 PageUp increases volume by 10.
     50 PageDown decreases volume by 10.
     51 Home sets volume to 100.
     52 End sets volume to 0.
     53 
     54 You can also control left & right levels for the current channel
     55 independently,
     56 according to this chart:
     57 
     58 Q  |  W  |  E    <-- UP
     59 -------------
     60 Z  |  X  |  C    <---DOWN
     61 
     62 ^     ^     ^
     63 |     |     +-- Right
     64 |     |
     65 |     +--- Both
     66 |
     67 Left
     68 
     69 
     70 If the current mixer channel is not a stereo channel, then all UP keys
     71 will work like W, and all DOWN keys will work like X.
     72 
     73 
     74 Exiting
     75 =======
     76 
     77 You can exit with ALT + Q, or by hitting ESC.
     78 
     79 
     80 -----------------------------------------------------------------
     81 
     82 Alsamixer has been written by Tim Janik <timj (a] gtk.org> and
     83 been furtherly improved by Jaroslav Kysela <perex (a] perex.cz>.
     84 This document was provided by Paul Winkler <zarmzarm (a] erols.com>.
     85