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 PERIODS
- 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 channel 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 touching 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.