Class Name

Waveform

Description

This is a Waveform analyzer. It returns the waveform of the of an audio stream the moment it is queried with the analyze() method.

Examples

  • import processing.sound.*;
    
    SoundFile sample;
    Waveform waveform;
    
    int samples = 100;
    
    public void setup()
    {
      size(640, 360);
      background(255);
    
      sample = new SoundFile(this, "beat.aiff");
      sample.loop();
    
      waveform = new Waveform(this, samples);
      waveform.input(sample);
    }
    
    public void draw()
    {
      background(0);
      stroke(255);
      strokeWeight(2);
      noFill();
    
    
      waveform.analyze();
    
      beginShape();
      for(int i = 0; i < samples; i++)
      {
        vertex(
          map(i, 0, samples, 0, width),
          map(waveform.data[i], -1, 1, 0, height)
        );
      }
      endShape();
    }
    

Constructors

  • Waveform(parent, nsamples)

Parameters

  • parenttypically use "this"
  • nsamplesnumber of waveform samples that you want to be able to read at once (a positive integer).

Methods

  • analyze()Gets the content of the current audiobuffer from the input source.
  • input()Define the audio input for the analyzer.