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
-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.
