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Time and pitch

Change speed without pitch and pitch without speed, and fit audio to a length.

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Change speed without pitch and pitch without speed, and fit audio to a length.

audioStretch

Change the speed of audio without changing its pitch

audioStretch( audio, rate )

Argument	Type	Default
`audio`	any	required	The audio buffer.
`rate`	double	required	Speed factor between 0.25 and 4. 1.25 is 25 percent faster and shorter, 0.8 is slower and longer.

Returns A new audio buffer.

Change the length of audio to a number of seconds without changing its pitch

audioFitTo( audio, seconds )

Argument	Type	Default
`audio`	any	required	The audio buffer.
`seconds`	double	required	The length to reach, in seconds. The change in speed should stay within about 25 percent for natural results.

Returns A new audio buffer of that length.

Change the pitch of audio without changing its length

audioPitch( audio, semitones )

Argument	Type	Default
`audio`	any	required	The audio buffer.
`semitones`	double	required	Up (positive) or down (negative) in semitones, within 24. 12 is one octave.

Returns A new audio buffer.