Illustration of Sound files:

For illustration, the following script generates a subplot which shows the signals from chirp and from train, which is as shown in figure:

The first argument to the sound function can be an n × 2 matrix for stereo sound. The second argument can also be omitted whenever calling the sound function; in that case the default sample frequency of 8192 Hz is used. This is the same frequency stored in the built-in sound MAT-files.

>> load train

Fs

Fs =

    8192

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