sound

Convert matrix of signal data to sound

collapse all in page

Syntax

Description

example

sound(y) sends audio signal y to the speaker at the default sample rate of 8192 hertz.

example

sound(y,Fs) sends audio signal y to the speaker at sample rate Fs.

example

sound(y,Fs,nBits) uses nBits bits per sample for audio signal y.

Examples

collapse all

Open Script

Load the example file gong.mat, which contains sample data y and rate Fs, and listen to the audio.

load gong.mat;
sound(y);
Open Script

Play an excerpt from Handel's "Hallelujah Chorus" at twice the recorded sample rate.

load handel.mat;
sound(y, 2*Fs);
Open Script
load handel.mat;
nBits = 16;
sound(y,Fs,nBits);

MATLAB® plays the audio with a bit depth of 16 bits per sample, if this is supported on your system.

Input Arguments

collapse all

Audio data, specified as an m-by-1 column vector for single-channel (mono) audio, or an m-by-2 matrix for stereo playback, where m is the number of audio samples. If y is an m-by-2 matrix, then the first column corresponds to the left channel, and the second column corresponds to the right channel. Stereo playback is available only if your system supports it.

Data Types: double

Sample rate, in hertz, of audio data y, is specified as a positive number from 1000 through 384000. Valid values depend on both the sample rates permitted by MATLAB® and the specific audio hardware on your system. MATLAB has a hard restriction of 1000 Hz <= Fs <= 384000 Hz, although further hardware-dependent restrictions apply.

Data Types: single | double

Bit depth of the sample values, specified as an integer. Valid values depend on the audio hardware installed. Most platforms support bit depths of 8 bits or 16 bits.

More About

collapse all

Tips

  • The sound function supports sound devices on all Windows® and most UNIX® platforms.

  • Most sound cards support sample rates between 5 and 48 kilohertz. Specifying a sample rate outside this range might produce unexpected results.

See Also

| | |

Introduced before R2006a

Was this topic helpful?
MATLAB Documentation
Other Documentation
Support