import ddf.minim.*;
import ddf.minim.effects.*;
import ddf.minim.analysis.*;

Minim minim;
AudioInput in;
BandPass bpf;
BeatDetect beat;
BeatListener bl;

void setup()
{
minim = new Minim(this);
in = minim.getLineIn();
bpf = new BandPass(55, 12, in.sampleRate());
in.addEffect(bpf);
beat = new BeatDetect(in.bufferSize(), in.sampleRate());
beat.setSensitivity(300);
bl = new BeatListener(beat, in);

}
void draw(){

if ( beat.isOnset() )
{
println(“beat!”);
}
}

void stop()
{
// always close Minim audio classes when you are finished with them
in.close();
// always stop Minim before exiting
minim.stop();
// this closes the sketch
super.stop();
}
class BeatListener implements AudioListener
{
private BeatDetect beat;
private AudioInput source;

BeatListener(BeatDetect beat, AudioInput source)
{
this.source = source;
this.source.addListener(this);
this.beat = beat;
}

void samples(float[] samps)
{
beat.detect(source.mix);
}

void samples(float[] sampsL, float[] sampsR)
{
beat.detect(source.mix);
}
}

And thank you to everyone else who has contributed to the excellent code examples and helpful forum comments. I’m really excited about what i can do with processing.

What exactly would those values be?

beat = new BeatDetect();
beat.setSensitivity(275);

I just wrote beat detection that uses the the line-in as input. The hardest part i found was configing my computers settings to get the right input, but if you got line-in example to work then you should be fine. Here’s parts of my code that my help:

minim = new Minim(this);
in = minim.getLineIn();
//bpf filter helps beatDetection algo when bass beat detection is only //wanted
bpf = new BandPass(55, 12, in.sampleRate());
in.addEffect(bpf);
beat.detect(in.mix);
if ( beat.isOnset() )
{
//what you want it to do
}

hope this helps.