speaker-test - command-line speaker test tone generator for ALSA
2. SYNOPSIS ▲
3. DESCRIPTION ▲
speaker-test generates a tone that can be used to test the speakers of a computer.
4. OPTIONS ▲
- -c | --channels NUM
NUM channels in stream
- -D | --device NAME
PCM device name NAME
- -f | --frequency FREQ
sine wave of FREQ Hz
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 \fPPERIODS\fP
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.
5. USAGE EXAMPLES ▲
Produce stereo sound from one stereo jack:
Produce 4 speaker sound from two stereo jacks:
Produce 5.1 speaker sound from three stereo jacks:
To send a nice low 75Hz tone to the Woofer and then exit without touching any other speakers:
6. AUTHOR ▲
The speaker-test program was written by James Courtier-Dutton. Pink noise support was added by Nathan Hurst. Further extensions by Takashi Iwai.