Simple music viz

musicviz.pde

//import Minim library
import ddf.minim.*;

//for displaying the sound's frequency
import ddf.minim.analysis.*;

Minim minim;

//to make it play song files
AudioPlayer song;

//for displaying the sound's frequency
FFT fft;

void setup() {

  //sketch size
  int w = 7016;
  int h = 9933;
  float scale = 0.333;
  size(int(w*scale), int(h*scale));
  background(#000000);
  minim = new Minim(this);
  
  //load the song you want to play
  //drag the file into your sketch window
  //and replace "mysong.mp3" with the file name
  song = minim.loadFile("mysong.mp3");
  song.play();

  fft = new FFT(song.bufferSize(), song.sampleRate());
}
 
void draw() {

  fft.forward(song.mix);
 
  strokeWeight(1);
  stroke(#FFF700, 30);

  pushMatrix();
  translate(0, 0); 
  int chunk = height / 200;
  for(int i = 0; i < 0+100; i++)
  {
    line(width/2, i + height/2, width/2 - fft.getBand(i)*3 * chunk,  height/2 - i * chunk);
    line(width/2, i + height/2, width/2 + fft.getBand(i)*3 * chunk, height/2 - i * chunk);
    line(width/2, i + height/2, width/2 - fft.getBand(i)*3 * chunk, i * chunk + height/2);
    line(width/2, i + height/2, width/2 + fft.getBand(i)*3 * chunk, i * chunk + height/2);
  }

  popMatrix();
  for(int i = 0; i < height / chunk; i++)
  {
    float x = random(30);
    stroke(x,x,x, 30);
    line(width/2 + song.mix.get(i)*800, i * chunk, width/2 + song.mix.get(i+1)*10, i * chunk +chunk);
  }

}
 
void stop()
{
  song.close();

  minim.stop();
 
  super.stop();
}