1. NAME▲

speaker-test - command-line speaker test tone generator for ALSA

2. SYNOPSIS ▲

speaker-test [-options]

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
  • --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 \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:

 
Sélectionnez
 speaker-test -Dplug:front -c2

Produce 4 speaker sound from two stereo jacks:

 
Sélectionnez
 speaker-test -Dplug:surround40 -c4

Produce 5.1 speaker sound from three stereo jacks:

 
Sélectionnez
 speaker-test -Dplug:surround51 -c6

To send a nice low 75Hz tone to the Woofer and then exit without touching any other speakers:

 
Sélectionnez
 speaker-test -Dplug:surround51 -c6 -s1 -f75

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.