This example demonstrates how to load a soundfile and modify the playback speed using mouse input.
A playback rate of “1” plays the sound at normal speed. “2” is twice as fast, and “0.5” is half-speed.
Sample Playback: Edited and maintained by p5.js Contributors and Processing Foundation. Licensed under CC BY-NC-SA 4.0.
Related Examples

An image of sound waves rendered in p5.js.
Making a Beep
Creating tones with an Oscillator.

An image of sound waves rendered in p5.js.
Filtering Sound
Simulate the sound of waves and wind with white noise.

An image of sound waves rendered in p5.js.
Playing Melodies
Create melodic music using an array of pitch values.

An image of sound waves rendered in p5.js.
Echo Synth
Trigger a short sound with an echo effect.

An image of sound waves rendered in p5.js.
Sample Playback
Load a soundfile and change its properties.

An image of sound waves rendered in p5.js.
Measuring Amplitude (Visualization)
Analyze the amplitude of sound with p5.Amplitude.

An image of sound waves rendered in p5.js.
Visualizing Sound
Spectral analysis for audio-responsive animations.

An image of sound waves rendered in p5.js.
Connecting to ToneJS
Working with AudioContexts and cross-library synthesis.