190 lines
6.0 KiB
HTML
190 lines
6.0 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of AMIXER</TITLE>
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</HEAD><BODY>
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<H1>AMIXER</H1>
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Section: User Commands (1)<BR>Updated: 11 Aug 2000<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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amixer - command-line mixer for ALSA soundcard driver
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<B>amixer</B> [<I>-option</I>] [<I>cmd</I>]
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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<B>amixer</B> allows command-line control of the mixer for the ALSA
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soundcard driver.
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<B>amixer</B> supports multiple soundcards.
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<P>
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<B>amixer</B> 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 simple mixer controls you can use.
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<P>
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<A NAME="lbAE"> </A>
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<H2>COMMANDS</H2>
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<P>
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<DL COMPACT>
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<DT id="1"><I>help</I><DD>
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Shows syntax.
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<P>
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<DT id="2"><I>info</I><DD>
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Shows the information about a mixer device.
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<P>
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<DT id="3"><I>scontrols</I><DD>
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Shows a complete list of simple mixer controls.
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<P>
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<DT id="4"><I>scontents</I><DD>
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Shows a complete list of simple mixer controls with their contents.
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<P>
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<DT id="5"><I>set</I> or <I>sset</I> <<I>SCONTROL</I>> <<I>PARAMETER</I>> ...<DD>
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Sets the simple mixer control contents. The parameter can be the volume
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either as a percentage from 0% to 100% with <I>%</I> suffix,
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a dB gain with <I>dB</I> suffix (like -12.5dB), or an exact hardware value.
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The dB gain can be used only for the mixer elements with available
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dB information.
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When plus(+) or minus(-) letter is appended after
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volume value, the volume is incremented or decremented from the current
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value, respectively.
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<P>
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The parameters <I>cap, nocap, mute, unmute, toggle</I> are used to
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change capture (recording) and muting for the group specified.
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<P>
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The optional modifiers can be put as extra parameters to specify
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the stream direction or channels to apply.
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The modifiers <I>playback</I> and <I>capture</I> specify the stream,
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and the modifiers <I>front, rear, center, woofer</I> are used to specify
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channels to be changed.
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<P>
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A simple mixer control must be specified. Only one device can be controlled
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at a time.
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<P>
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<DT id="6"><I>get</I> or <I>sget</I> <<I>SCONTROL</I>><DD>
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Shows the simple mixer control contents.
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<P>
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A simple mixer control must be specified. Only one device can be controlled
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at a time.
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<P>
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<DT id="7"><I>controls</I><DD>
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Shows a complete list of card controls.
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<P>
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<DT id="8"><I>contents</I><DD>
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Shows a complete list of card controls with their contents.
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<P>
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<DT id="9"><I>cset</I> <<I>CONTROL</I>> <<I>PARAMETER</I>> ...<DD>
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Sets the card control contents. The identifier has these components: iface,
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name, index, device, subdevice, numid. The next argument specifies the value
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of control.
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<P>
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<DT id="10"><I>cget</I> <<I>CONTROL</I>><DD>
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Shows the card control contents. The identifier has same syntax as for
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the <I>cset</I> command.
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<P>
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</DL>
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<A NAME="lbAF"> </A>
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<H2>OPTIONS</H2>
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<P>
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<DL COMPACT>
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<DT id="11"><I>-c</I> card<DD>
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<P>
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Select the card number to control. The device name created from this
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parameter has syntax 'hw:N' where N is specified card number.
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<P>
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<DT id="12"><I>-D</I> device<DD>
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<P>
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Select the device name to control. The default control name is 'default'.
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<P>
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<DT id="13"><I>-s</I> | <I>--stdin</I><DD>
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<P>
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Read from stdin and execute the command on each line sequentially.
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When this option is given, the command in command-line arguments is ignored.
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<P>
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Only sset and cset are accepted. Other commands are ignored.
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The commands to unmatched ids are ignored without errors too.
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<P>
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<DT id="14"><I>-h</I> <DD>
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Help: show syntax.
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<P>
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<DT id="15"><I>-q</I><DD>
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Quiet mode. Do not show results of changes.
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<P>
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<DT id="16"><I>-R</I> <DD>
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Use the raw value for evaluating the percentage representation.
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This is the default mode.
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<P>
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<DT id="17"><I>-M</I> <DD>
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Use the mapped volume for evaluating the percentage representation
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like <B>alsamixer</B>, to be more natural for human ear.
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<P>
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</DL>
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<A NAME="lbAG"> </A>
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<H2>EXAMPLES</H2>
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<P>
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<DL COMPACT>
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<DT id="18"><B>amixer -c 1 sset Line,0 80%,40% unmute cap</B><DD>
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will set the second soundcard's left line input volume to 80% and
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right line input to 40%, unmute it, and select it as a source for
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capture (recording).
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<P>
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<DT id="19"><B>amixer -c 1 -- sset Master playback -20dB</B><DD>
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will set the master volume of the second card to -20dB. If the master
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has multiple channels, all channels are set to the same value.
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<P>
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<DT id="20"><B>amixer -c 1 set PCM 2dB+</B><DD>
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will increase the PCM volume of the second card with 2dB. When both
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playback and capture volumes exist, this is applied to both volumes.
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<P>
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<DT id="21"><B>amixer -c 2 cset iface=MIXER,name='Line Playback Volume",index=1 40%</B><DD>
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will set the third soundcard's second line playback volume(s) to 40%
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<P>
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<DT id="22"><B>amixer -c 2 cset numid=34 40%</B><DD>
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will set the 34th soundcard element to 40%
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<P>
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</DL>
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<A NAME="lbAH"> </A>
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<H2>SEE ALSO</H2>
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<B>
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<A HREF="/cgi-bin/man/man2html?1+alsamixer">alsamixer</A>(1)
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</B>
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<P>
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<A NAME="lbAI"> </A>
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<H2>BUGS </H2>
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None known.
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<P>
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<A NAME="lbAJ"> </A>
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<H2>AUTHOR</H2>
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<B>amixer</B> is by Jaroslav Kysela <<A HREF="mailto:perex@perex.cz">perex@perex.cz</A>>.
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This document is by Paul Winkler <<A HREF="mailto:zarmzarm@erols.com">zarmzarm@erols.com</A>> and Jaroslav Kysela <<A HREF="mailto:perex@perex.cz">perex@perex.cz</A>>.
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="23"><A HREF="#lbAB">NAME</A><DD>
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<DT id="24"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="25"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="26"><A HREF="#lbAE">COMMANDS</A><DD>
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<DT id="27"><A HREF="#lbAF">OPTIONS</A><DD>
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<DT id="28"><A HREF="#lbAG">EXAMPLES</A><DD>
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<DT id="29"><A HREF="#lbAH">SEE ALSO</A><DD>
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<DT id="30"><A HREF="#lbAI">BUGS </A><DD>
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<DT id="31"><A HREF="#lbAJ">AUTHOR</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:06 GMT, March 31, 2021
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</BODY>
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</HTML>
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