diff options
Diffstat (limited to 'amixer/amixer.1')
-rw-r--r-- | amixer/amixer.1 | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/amixer/amixer.1 b/amixer/amixer.1 new file mode 100644 index 0000000..b1ac323 --- /dev/null +++ b/amixer/amixer.1 @@ -0,0 +1,141 @@ +.TH AMIXER 1 "11 Aug 2000" +.SH NAME +amixer \- command-line mixer for ALSA soundcard driver +.SH SYNOPSIS +\fBamixer\fP [\fI\-option\fP] [\fIcmd\fP] +.SH DESCRIPTION +\fBamixer\fP allows command-line control of the mixer for the ALSA +soundcard driver. +\fBamixer\fP supports multiple soundcards. + +\fBamixer\fR with no arguments will display the current mixer settings +for the default soundcard and device. This is a good way to see a list +of the simple mixer controls you can use. + +.SH COMMANDS + +.TP +\fIhelp\fP +Shows syntax. + +.TP +\fIinfo\fP +Shows the information about a mixer device. + +.TP +\fIscontrols\fP +Shows a complete list of simple mixer controls. + +.TP +\fIscontents\fP +Shows a complete list of simple mixer controls with their contents. + +.TP +\fIset\fP or \fIsset\fP <\fISCONTROL\fP> <\fIPARAMETER\fP> ... +Sets the simple mixer control contents. The parameter can be the volume +either as a percentage from 0% to 100% with \fI%\fP suffix, +a dB gain with \fIdB\fP suffix (like -12.5dB), or an exact hardware value. +The dB gain can be used only for the mixer elements with available +dB information. +When plus(+) or minus(\-) letter is appended after +volume value, the volume is incremented or decremented from the current +value, respectively. + +The parameters \fIcap, nocap, mute, unmute, toggle\fP are used to +change capture (recording) and muting for the group specified. + +The optional modifiers can be put as extra parameters to specify +the stream direction or channels to apply. +The modifiers \fIplayback\fP and \fIcapture\fP specify the stream, +and the modifiers \fIfront, rear, center, woofer\fP are used to specify +channels to be changed. + +A simple mixer control must be specified. Only one device can be controlled +at a time. + +.TP +\fIget\fP or \fIsget\fP <\fISCONTROL\fP> +Shows the simple mixer control contents. + +A simple mixer control must be specified. Only one device can be controlled +at a time. + +.TP +\fIcontrols\fP +Shows a complete list of card controls. + +.TP +\fIcontents\fP +Shows a complete list of card controls with their contents. + +.TP +\fIcset\fP <\fICONTROL\fP> <\fIPARAMETER\fP> ... +Sets the card control contents. The identifier has these components: iface, +name, index, device, subdevice, numid. The next argument specifies the value +of control. + +.TP +\fIcget\fP <\fICONTROL\fP> +Shows the card control contents. The identifier has same syntax as for +the \fIcset\fP command. + +.SH OPTIONS + +.TP +\fI\-c\fP card + +Select the card number to control. The device name created from this +parameter has syntax 'hw:N' where N is specified card number. + +.TP +\fI\-D\fP device + +Select the device name to control. The default control name is 'default'. + +.TP +\fI\-s\fP | \fI\-\-stdin\fP + +Read from stdin and execute the command on each line sequentially. +When this option is given, the command in command-line arguments is ignored. + +Only sset and cset are accepted. Other commands are ignored. +The commands to unmatched ids are ignored without errors too. + +.TP +\fI\-h\fP +Help: show syntax. +.TP +\fI\-q\fP +Quiet mode. Do not show results of changes. + +.SH EXAMPLES + +.TP +\fBamixer \-c 1 sset Line,0 80%,40% unmute cap\fR +will set the second soundcard's left line input volume to 80% and +right line input to 40%, unmute it, and select it as a source for +capture (recording).\fR + +.TP +\fBamixer \-c 1 \-\- sset Master playback -20dB\fR +will set the master volume of the second card to -20dB. If the master +has multiple channels, all channels are set to the same value. + +.TP +\fBamixer \-c 1 set PCM 2dB+\fR +will increase the PCM volume of the second card with 2dB. When both +playback and capture volumes exist, this is applied to both volumes. + +.TP +\fBamixer \-c 2 cset iface=MIXER,name='Line Playback Volume",index=1 40%\fR +will set the third soundcard's second line playback volume(s) to 40% + +.TP +\fBamixer \-c 2 cset numid=34 40%\fR +will set the 34th soundcard element to 40% + +.SH BUGS +None known. +.SH AUTHOR +\fBamixer\fP is by Jaroslav Kysela <perex@perex.cz>. +This document is by Paul Winkler <zarmzarm@erols.com> and Jaroslav Kysela <perex@perex.cz>. |