// Pressing the mouse stops and starts the sound
public void mousePressed() {
if (tone.isPlaying()) {
tone.stop(); // The sound can be stopped with the function stop().
} else {
tone.repeat();
}
}
public void draw() {
if (tone.isPlaying()) {
background(255);
} else {
background(100);
}
// Set the volume to a range between 0 and 1.0
float ratio = (float) mouseX / width;
tone.setVolume(ratio);
// Set the rate to a range between 0 and 88,200
// Changing the rate alters the pitch
ratio = (float) mouseY / height;
// The rate is set according to the mouseY position.
tone.setRate(ratio * 88200);
// Draw some rectangles to show what is going on
stroke(0);
fill(175);
rect(0, 160, mouseX, 20);
stroke(0);
fill(175);
rect(160, 0, 20, mouseY);
}