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28 .\" $FreeBSD: src/usr.sbin/mixer/mixer.8,v 1.10.2.7 2003/03/11 21:13:51 trhodes Exp $
35 .Nd set/display soundcard mixer values
47 .Op : Oo Cm + | - Oc Ar rvol
70 utility is used to set and display soundcard mixer device levels.
72 also be used to start and stop recording from the soundcard. The list
73 of mixer devices that may be modified are:
74 .Bd -ragged -offset indent
75 vol, bass, treble, synth, pcm, speaker, mic, cd, mix,
76 pcm2, rec, igain, ogain, line1, line2, and line3.
79 Not all mixer devices are available.
81 Without any arguments,
83 displays the current settings for all supported devices, followed by information
84 about the current recording input devices.
87 argument is specified,
89 displays only the value for that
92 To modify the mixer value
94 the optional left and right channel settings of
95 .Ar lvol Ns Op : Ns Ar rvol
100 arguments may be from 0 - 100. Omitting
102 and including only the channel settings will change the main volume level.
104 If the left or right channel settings are prefixed with
108 the value following will be used as a relative adjustment, modifying the
109 current settings by the amount specified.
113 flag is used, the current mixer values will be displayed in a format suitable
114 for use as the command-line arguments to a future invocation of
118 To change the recording device you use one of:
119 .Bl -tag -width =rec -offset indent
123 of possible recording devices
127 to possible recording devices
131 from possible recording devices
133 sets the recording device to
137 The above commands work on an internal mask. After all the options
138 have been parsed, it will set then read the mask from the sound card.
139 This will let you see EXACTLY what the soundcard is using for the
142 The option recsrc will display the current recording devices.
153 will print a help and exit
155 .Bl -tag -width /dev/mixer -compact
157 the default mixer device
164 utility first appeared in
169 .An Craig Metz Aq Mt cmetz@thor.tjhsst.edu
171 .An Hannu Savolainen .
173 .An John-Mark Gurney Aq Mt jmg@FreeBSD.org .
175 manual page was written by
176 .An Mike Pritchard Aq Mt mpp@FreeBSD.org .