SPEAKER-TEST(1) SPEAKER-TEST(1)
NAME
speaker-test - command-line speaker test tone generator for ALSA
SYNOPSIS
speaker-test [-options]
DESCRIPTION
speaker-test generates a tone that can be used to test the speakers of
a computer.
OPTIONS
-c | --channels NUM
NUM channels in stream
-D | --device NAME
PCM device name NAME
-f | --frequency FREQ
sine wave of FREQ Hz
--help Print usage help
-b | --buffer TIME
Use buffer size of TIME microseconds. When 0 is given, use the
maximal buffer size. The default value is 0.
-p | --period TIME
Use period size of TIME microseconds. When 0 is given, the
periods given by -P option is used. The default value is 0.
-P | --nperiods ERIODS
Use number of periods. The default value is 4.
-r | --rate RATE
stream of RATE Hz
-t | --test pink|sine|wav
-t pink means use pink noise (default).
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.
-t sine means to use sine wave.
-t wav means to play WAV files, either pre-defined files or
given via -w option.
You can pass the number from 1 to 3 as a backward compatibility.
-l | --nloops COUNT
Specifies the number of loops. Zero means to run infinitely.
When -s option below with a valid channel is given, speaker-test
will perform always a single-shot without looping.
-s | --speaker CHANNEL
Do a single-shot speaker test for the given channel. The chan-
nel number starts from 1. The channel number corresponds to
left, right, rear-left, rear-right, center, LFE, side-left,
side-right, and so on.
For example, when 1 is passed, it tests the left channel only
once rather than both channels with looping.
-w | --wavfile
Use the given WAV file for the playback instead of pre-defined
WAV files.
-W | --wavdir
Specify the directory containing WAV files for playback. The
default path is /usr/share/sounds/alsa.
USAGE EXAMPLES
Produce stereo sound from one stereo jack:
speaker-test -Dplug:front -c2
Produce 4 speaker sound from two stereo jacks:
speaker-test -Dplug:surround40 -c4
Produce 5.1 speaker sound from three stereo jacks:
speaker-test -Dplug:surround51 -c6
To send a nice low 75Hz tone to the Woofer and then exit without touch-
ing any other speakers:
speaker-test -Dplug:surround51 -c6 -s1 -f75
AUTHOR
The speaker-test program was written by James Courtier-Dutton. Pink
noise support was added by Nathan Hurst. Further extensions by Takashi
Iwai.
speaker-test 20 September 2004 SPEAKER-TEST(1)
