// Demonstrates sound input. Download and install Sonia
// from http://sonia.pitaru.com before running.

import pitaru.sonia_v2_9.*; 
import SoniaHelper.*;

float level,damperval;
SoniaHelper fft;

void setup(){
  size(512,400);

  // Start Sonia engine.
  Sonia.start(this); 

  // Start LiveInput and return 256 FFT frequency bands.
  LiveInput.start(256); 
  LiveInput.useEqualizer(true);

  // Initialize SoniaHelper
  // SoniaHelper(int _n, int _nbands,boolean doAvg)
  int spectrumLength=256;
  int numbands=8;
  
  fft=new SoniaHelper(spectrumLength,numbands,false);
  fft.setMaxLimits(50,500);
  
  // dampen sound input. 0.1 == 10% change per frame.
  damperval=0.1;
  fft.setDamper(damperval);  

}

void draw() {
  background(0);

  // get spectrum data from Sonia
  LiveInput.getSpectrum();
  
  // use SoniaHelper to modify spectrum data.
  // SoniaHelper.spectrum[] contains values normalized to
  // be in the range [0..1]
  fft.update(LiveInput.spectrum);

  noStroke();
  fill(255,0,0);

  for(int i=0; i<256; i++) {
    level=fft.spectrum[i]*(height-10);
    rect(i*2,height-(level+10), 2,level+10);
  }
}