Hey, I'm trying to find the drum beats in a song and identify different notes in the melody of a song.  I have been using the spectrum[] example to try to find the drum beat.  Does anyone have any ideas? Thanks.  Dave

// Most Code used from an Example by Krister Olsson

import krister.Ess.*;

Channel myChannel;

void setup() {
 size(256*2,200);

 // start up Ess
 Ess.start(this);

 // load "hello.aiff" into a new Channel
 myChannel=new Channel("voyager3.mp3");
 
 myChannel.useEqualizer(true);

 // we want 256 frequency bands, so we pass 512
 myChannel.setupFFT(512);

 // start the sound looping forever
 myChannel.play(Ess.FOREVER);
 
 noStroke();
 fill(255);
}

void draw() {
 background(0,0,255);
 
 
 // load our spectrum
 myChannel.loadSpectrum();
 // draw our frequency bars
 for (int i=0; i<256*2; i+=2) {
   float temp=max(0,180-myChannel.spectrum[i/2]*175);
   rect(i,temp+.5,2,height-temp+.5);
   
   if(i == 2 && (temp+.5) < 140){  
     //println(temp+.5);
     //kinda inconsistant - blinks with strong snare
     fill(255,0,0);
     ellipse(70,70,10,10);
     fill(255);
   }
 }
 fill(255,0,0);  
 rect(1,135,2,2);
 fill(255);
}

// we are done, clean up Ess

public void stop() {
 Ess.stop();
 super.stop();
}