FFTPolarPlot

import ddf.minim.*;

import ddf.minim.signals.*;

import ddf.minim.analysis.*;

import ddf.minim.effects.*;

​

Minim minim;

FFT fft;

AudioInput in;

int bufferSize = 512;

int fftSize = floor(bufferSize*.5f)+1;

//draw

float ai = TWO_PI/fftSize;

​

void setup(){

  size(400,400,P2D);

  smooth();

  noStroke();

  colorMode(HSB,fftSize,100,100);

  initSound();

}

​

void draw(){

  background(0,0,100);

  fft.forward(in.right);

  for(int i = 0; i < fftSize; i++){

    float band = fft.getBand(i);

    fill(i,150+100*(band/10),100,100);

    arc(200,200,200+band * (i+1),200+band * (i+1),ai*i,ai*(i+1));

  }

}

void initSound(){

  minim = new Minim(this);

  in = minim.getLineIn(Minim.STEREO, 512);

  fft = new FFT(in.bufferSize(), in.sampleRate());

}

void stop()

{

  in.close();

  minim.stop();

  super.stop();

}

​