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.
| Name | freq() | 
|---|---|
| Examples | 
import processing.sound.*;
WhiteNoise noise;
HighPass highPass;
float freq=2500;
void setup() {
  size(640,360);
  background(255);
    
  // Create a noise generator and a highpass filter
  noise = new WhiteNoise(this);
  highPass = new HighPass(this);
    
  noise.play(0.5);
  highPass.process(noise);
  // Change the cutoff frequency of the filter
  highPass.freq(freq);
}      
void draw() {
}
 | 
| Description | Set the cut off frequency for the filter | 
| Syntax | highPass.freq() | 
