version 1.6, 2020/04/23 05:54:35 |
version 1.7, 2020/04/23 14:47:20 |
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.Os |
.Os |
.Sh NAME |
.Sh NAME |
.Nm mixerctl |
.Nm mixerctl |
.Nd manipulate audio hardware controls |
.Nd manipulate controls for audio hardware |
.Sh SYNOPSIS |
.Sh SYNOPSIS |
.Nm mixerctl |
.Nm mixerctl |
.Op Fl anv |
.Op Fl anv |
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.Sh DESCRIPTION |
.Sh DESCRIPTION |
The |
The |
.Nm |
.Nm |
command displays or sets various audio device controls. |
command displays or sets various controls for audio hardware, |
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such as microphone reference voltage or output level. |
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Where hardware defaults are not the desired ones, |
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controls can be set at system startup using the configuration file |
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.Xr mixerctl.conf 5 . |
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.Pp |
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.Nm |
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itself can only be run by the superuser. |
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Common controls should be adjusted at runtime using |
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.Xr sndioctl 1 , |
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which is intended for every day use and requires no superuser privileges. |
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Manual use of |
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.Nm |
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is intended for controls which cannot be set using |
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.Xr sndioctl 1 . |
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.Pp |
If a list of control names is present on the command line, |
If a list of control names is present on the command line, |
.Nm |
.Nm |
prints the current value of those controls for the specified device. |
prints the current value of those controls for the specified device. |
Controls can also be set up at system startup using the configuration file |
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.Xr mixerctl.conf 5 . |
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.Pp |
.Pp |
The options are as follows: |
The options are as follows: |
.Bl -tag -width "-f file" |
.Bl -tag -width "-f file" |