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119
alsamixer/alsamixer.1
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119
alsamixer/alsamixer.1
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.TH ALSAMIXER 1 "25 Nov 1998"
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.SH NAME
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alsamixer \- soundcard mixer for ALSA soundcard driver, with ncurses interface
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.SH SYNOPSIS
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\fBalsamixer\fP [\fIoptions\fP]
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.SH DESCRIPTION
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\fBalsamixer\fP is an ncurses mixer program for use with the ALSA
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soundcard drivers. It supports multiple soundcards with multiple devices.
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.SH INVOKING
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\fBalsamixer\fP [\fIoptions\fP]
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.SS Options
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.TP
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\fI-h, -help\fP
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Help: show available flags.
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.TP
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\fI-c\fP <card number>
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Select the soundcard to use, if you have more than one. Cards are
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numbered from 1 (the default).
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.TP
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\fI-m\fP <device number>
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Select the soundcard device to control, if your card has more than
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one. Devices are numbered from 0 (the default). Not to be confused
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with the soundcard mixer channels, which are sometimes also referred
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to as "devices", just to be annoying. Many soundcards will only have
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device 0. Some more complex cards may have more. This flag corresponds
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to the -d flag for \fBamixer\fP, \fBarecord\fP, and \fBaplay\fP.
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.TP
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\fI-e\fP
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Start in "exact mode." This will affect the numbers you see displayed
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for volumes, but does not affect operation of the level controls.
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The default behavior is to show levels in percent from 0 to 100. This
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is easy to read, but can mislead you about how much control the
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soundcard actually lets you have. Exact mode, on the other hand, shows
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you the settings as the soundcard itself understands them. In exact
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mode, each channel level is between 0 and a power of 2 minus one
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(e.g. 0-7, or 0-63). Exact mode may also be toggled while alsamixer is
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running, by using \fITAB\fP.
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.SH KEYBOARD COMMANDS
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\fBalsamixer\fP recognizes the following keyboard commands to control the soundcard.
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.SS
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General Controls
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The \fILeft\fP and \fIright arrow\fP keys are used to select the
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channel (or device, depending on your preferred terminology). You can
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also use \fIn\fP ("next") and \fIp\fP ("previous").
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The \fIUp\fP and \fIDown Arrows\fP control the volume for the
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currently selected device. You can also use \fI+\fP or \fI-\fP for the
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same purpose. Both the left and right signals are affected. For
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independent left and right control, see below.
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\fIM\fP toggles muting for the current channel (both left and right). You can
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mute left and right independently by using \fI,\fP and \fI.\fP respectively.
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\fISPACE\fP toggles recording: the current channel will be added or
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removed from the sources used for recording. This only works for valid
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input channels, of course.
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\fIL\fP re-draws the screen.
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\fITAB\fP toggles the mode for volume display. See description for the
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\fI-e\fP flag above.
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.SS
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Quick Volume Changes
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\fIPageUp\fP increases volume by 10.
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\fIPageDown\fP decreases volume by 10.
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\fIHome\fP sets volume to maximum.
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\fIEnd\fP sets volume to 0.
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You can also control left & right levels for the current channel
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independently, as follows:
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[\fIQ\fP | \fIW\fP | \fIE\fP ] -- turn UP [ left | both | right ]
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[\fIZ\fP | \fIX\fP | \fIC\fP ] -- turn DOWN [ left | both | right ]
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If the currently selected mixer channel is not a stereo channel, then
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all UP keys will work like \fIW\fP, and all DOWN keys will work like \fIX\fP.
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.SS
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Exiting
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Quit the program with \fIALT Q\fP, or by hitting \fIESC\fP.
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.SH SEE ALSO
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\fB
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amixer(1),
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arecord(1)
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\fP
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.SH BUGS
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None known. Some terminal emulators (e.g. \fBnxterm\fP) may not
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work quite right with ncurses, but that's their own damn
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fault. Plain old \fBxterm\fP seems to be fine.
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.SH AUTHOR
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\fBalsamixer\fP is by Jaroslav Kysela <perex@jcu.cz>
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This document is by Paul Winkler <zarmzarm@erols.com>.
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112
aplay/arecord.1
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112
aplay/arecord.1
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.TH APLAY 1 "25 Nov 1998"
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.SH NAME
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arecord, aplay \- command-line sound recorder and player for ALSA soundcard driver
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.SH SYNOPSIS
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[\fBarecord\fP | \fBaplay\fP ] [\fIflags\fP] filename
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.SH DESCRIPTION
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\fBarecord\fP is a command-line soundfile recorder for the ALSA soundcard
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driver. It supports several file formats and multiple soundcards with
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multiple devices.
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\fBaplay\fP is much the same, only it plays instead of recording. For
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supported soundfile formats, the sampling rate, bit depth, and so
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forth can be automatically determined from the soundfile header.
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.SH INVOKING
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[\fBarecord\fP | \fBaplay\fP ] [\fIflags\fP] filename
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.SS Options
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.TP
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\fI-h, --help\fP
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Help: show syntax.
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.TP
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\fI-V, --version\fP
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Print current version.
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.TP
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\fI-l\fP
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List all available soundcards and devices.
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.TP
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\fI-c\fP <card number>
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Select the soundcard to use, if you have more than one. Cards are
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numbered from 1 (the default).
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.TP
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\fI-d\fP <device number>
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Select the soundcard device to use, if your card has more than
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one. Devices are numbered from 0 (the default). Not to be confused
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with the soundcard mixer channels, which are sometimes also referred
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to as "devices", just to be annoying. Many soundcards will only have
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device 0. Some more complex cards may have mor. Try using \fI-l\fP
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and see what you get.
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.TP
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\fI-q\fP
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Quiet mode. Suppress messages (not sound :))
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.TP
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\fI-w\fP
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Use Wave soundfile format (.wav)
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.TP
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\fI-r\fP
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Use raw soundfile format. Requires -s, -b, and -p flags?
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.TP
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\fI-u\fP
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Use Sparc Audio soundfile format (.au)
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.TP
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\fI-v\fP
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Use Voc soundfile format
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.TP
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\fI-S\fP
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Soundfile is stereo. Mono is the default for headerless files.
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.TP
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\fI-t \fP<secs>
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Time limit for recording, in seconds.
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.TP
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\fI-s \fP<Hz>
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Sampling rate in Hertz.
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.TP
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\fI-b \fP<bits>
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Bit depth (8 or 16 bits).
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.TP
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\fI-m\fP
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Set to CD standard quality (44100 Hz, stereo, 16-bit linear).
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.TP
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\fI-M \fP<bits>
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Set to DAT quality (48000 Hz, stereo, 16-bit linear).
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.TP
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\fI-p \fP<type>
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Compression type (alaw, ulaw, adpcm).
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.SS
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Example:
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.RS
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\fBaplay -c 2 -r -u -s 22050 -b 8 -p ulaw foobar\fR
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.ID
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will play the raw file "foobar" as a
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22050-Hz, mono, 8-bit, Mu-Law .au file, using the second soundcard.
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\fBarecord -t 10 -m -w foobar.wav\fP
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will record foobar.wav as a 10-second, CD-quality wave file.
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.SH SEE ALSO
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\fB
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alsamixer(1),
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amixer(1)
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\fP
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.SH BUGS
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Note that .aiff files are not currently supported.
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.SH AUTHOR
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\fBarecord\fP and \fBaplay\fP are by Jaroslav Kysela <perex@jcu.cz>
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This document is by Paul Winkler <zarmzarm@erols.com>.
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