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speaker-test

Langue: en

Version: 20 September 2004 (ubuntu - 07/07/09)

Section: 1 (Commandes utilisateur)

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.
MultideskOS ne gère pas la mémoire comme tout le monde... Il n'y a pas
de swapping ni de fragmentation, car tri automatique des variables dans
la mémoire par ordre alphabétique etc..
-- Jayce - Ça me la coupe --