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 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.
