This openFrameworks example demonstrates how to load audio files, play sounds interactively and how to manipulate their pan and playback speed.

Studying this example will help you understand:

• how to use ofSoundPlayer to play sounds, and how to use its helpful functions, e.g.:
  • load() to load a sound file.
  • play() to play a sound file.
  • setSpeed(), setPan(), setVolume() do what you would expect them to.
  • setMultiPlay() to play the sound file more than once at the same time (if set to true).
• how ofSoundUpdate() is called in update() to update the sound playing system.
• how to use ofMap() to map values to a different range.
• how to allow the user to interact with the app in mouseDragged() and mousePressed().

You should see the window separated into three sections: synth, beats, and vocals. Clicking on each section should play a sound file – depending on your mouse position it will play the sounds at varying speeds and pitches.

Instructions for use:

• Click in the left area to play the synth sound file. The x-position of where you clicked should change the pan, the y-position changes the speed.
• Click in the center area to play the beats. Click and drag up and down to change the playback speed.
• Click in the right area to play the vocals. These are set to multiplay, so you can play them at varying speeds several times at once.

This example uses the following classes:

• ofSoundPlayer