mirror of
https://github.com/alsa-project/alsa-utils
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101 lines
2 KiB
Groff
101 lines
2 KiB
Groff
.\" -*- nroff -*-
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.\" macros
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.de EX \" Begin Example
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. IP
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. ft CW
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. nf
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. ne \\$1
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..
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.de EE \" End Example
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. ft P
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. fi
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. PP
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..
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.TH SPEAKER\-TEST 1 "20 September 2004" speaker-test
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.SH NAME
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speaker\-test \- command-line speaker test tone generator for ALSA
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.SH SYNOPSIS
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.B speaker\-test
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.BR "" [ \-D | \-\-device
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.IR FILE ]
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.BR "" [ \-r | \-\-rate
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.IR RATE ]
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.BR "" [ \-c | \-\-channels
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.IR NUM ]
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.BR "" [ \-f | \-\-frequency
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.IR FREQ ]
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.BR "" [ \-p | \-\-period
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.IR TIME ]
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.BR "" [ \-n | \-\-noise
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.IR TIME ]
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.BR "" [ \-s | \-\-speaker " " "1|2" ]
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.P
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.B speaker\-test
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.B \-\-help
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.SH DESCRIPTION
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\fBspeaker\-test\fP generates a tone that can be used to test the speakers of a computer.
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.SH OPTIONS
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.TP
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\fB\-c\fP | \fB\-\-channels\fP \fINUM\fP
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\fINUM\fP channels in stream
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.TP
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\fB\-D\fP | \fB\-\-device\fP \fINAME\fP
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PCM device name \fINAME\fP
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.TP
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\fB\-f\fP | \fB\-\-frequency\fP \fIFREQ\fP
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sine wave of \fIFREQ\fP Hz
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.TP
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\fB\-\-help\fP
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Print usage help
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.TP
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\fB\-p\fP | \fB\-\-period\fP \fITIME\fP
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period size of \fITIME\fP microseconds
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.TP
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\fB\-r\fP | \fB\-\-rate\fP \fIRATE\fP
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stream of \fIRATE\fP Hz
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.TP
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\fB\-t\fP | \fB\-\-test\fP \fB1\fP|\fB2\fP
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-t1 means use pink noise (default).
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Pink noise is perceptually uniform noise - that is, it sounds like every frequency at once. If you can hear any tone it may indicate resonances in your speaker system or room.
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-t2 means use sine wave.
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.TP
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\fB\-s\fP | \fB\-\-speaker\fP \fB1\fP|\fB2\fP
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Test speaker 1 or speaker 2 only, rather than both
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.SH USAGE EXAMPLES
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Produce stereo sound from one stereo jack:
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.EX
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speaker-test -Dplug:front -c2
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.EE
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Produce 4 speaker sound from two stereo jacks:
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.EX
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speaker-test -Dplug:surround40 -c4
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.EE
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Produce 5.1 speaker sound from three stereo jacks:
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.EX
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speaker-test -Dplug:surround51 -c6
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.EE
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To send a nice low 75Hz tone to the Woofer and then exit without touching any other speakers:
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.EX
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speaker-test -Dplug:surround51 -c6 -s1 -f75
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.EE
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.SH AUTHOR
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The speaker-test program was written by James Courtier-Dutton.
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Pink noise support was added by Nathan Hurst.
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