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48823e9ea5
- add front, rear, center, woofer channel selection - left and right volumes can be given separately - volumes can be increased/decreased relatively with + or - suffix
102 lines
2.7 KiB
Groff
102 lines
2.7 KiB
Groff
.TH AMIXER 1 "27 Jul 1999"
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.SH NAME
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amixer \- commandline mixer for ALSA soundcard driver
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.SH SYNOPSIS
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\fBamixer\fP [\fI-c\fP card] [\fI-d\fP dev] [\fIcmd\fP]
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.SH DESCRIPTION
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\fBamixer\fP allows command-line control of the mixer for the ALSA
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soundcard driver.
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\fBamixer\fP supports multiple soundcards with multiple devices.
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.SH INVOKING
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\fBamixer\fR with no arguments will display the current mixer settings
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for the default soundcard and device. This is a good way to see a list
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of the groups you can control.
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.SH COMMANDS
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.TP
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\fIinfo\fP
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Shows the information about a mixer device.
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.TP
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\fIgroups\fP
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Shows a complete list of mixer groups.
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.TP
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\fIgcontents\fP
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Shows a complete list of mixer groups with their contents.
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.TP
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\fIset\fP
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Sets the group contents. The parameter can be the volume either as a
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percentage from 0% to 100% or a exact hardware value. The parameters
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\fIcapture, nocapture, mute, unmute\fP are used to toggle capture
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(recording) and muting for the group specified.
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The parameters \fIfront, rear, center, woofer\fP are used to specify
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channels to be changed.
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When plus(+) or minus(-) letter is appended after volume value,
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the volume is incremented or decremented from the current value,
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respectively.
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A mixer group must be specified. Only one device can be controlled at
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a time.
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.TP
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\fIget\fP
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Shows the group contents.
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A mixer group must be specified. Only one device can be controlled at
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a time.
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.TP
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\fIelements\fP
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Shows a complete list of mixer elements.
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.TP
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\fIcontents\fP
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Shows a complete list of mixer elements with their contents.
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.TP
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\fIeset\fP
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Sets the mixer element contents. This feature is not documented and is intended
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for experienced users only.
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.TP
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\fIeget\fP
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Shows the mixer element contents. This feature is not documented and is
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indended for experienced users only.
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.SS Options
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.TP
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[\fI-c\fP card] [\fI-d\fP device]
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Select the card and device number to control. Cards are numbered from 0
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(the default). Devices are numbered from 0 (the default). Note that
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here, "device" does \fBnot\fP mean "mixer channel", but refers to the
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architecture of your soundcard. Many soundcards will only have device 0.
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Some more complex cards may have more devices. Try using \fI-d 1\fP and
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if anything useful happens, now you know more than I do. :)
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.TP
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\fI-h\fP
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Help: show syntax.
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.TP
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\fI-q\fP
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Quiet mode. Do not show results of changes.
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.SS
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Example:
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.RS
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\fBamixer -c 1 set Line 80% unmute capture\fR
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.ID
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will set the second soundcard's line input volume to 80%, unmute it,
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and select it as a source for capture (recording).
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.SH BUGS
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None known.
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.SH AUTHOR
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\fBamixer\fP is by Jaroslav Kysela <perex@suse.cz>.
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This document is by Paul Winkler <zarmzarm@erols.com> and Jaroslav Kysela <perex@suse.cz>.
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