This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Core Javadoc and Libraries Javadoc.

import processing.sound.*;
SqrOsc square;

void setup() {
  size(640, 360);
  background(255);
    
  // Create square wave oscillator.
  square = new SqrOsc(this);
  square.play();
  square.amp(0.5);
}      

void draw() {
}

.amp(amp)