Minimで周波数変調

/**
* frequency modulation
*
* @author aa_debdeb
* @date 2016/11/25
*/

import ddf.minim.spi.*;
import ddf.minim.signals.*;
import ddf.minim.*;
import ddf.minim.analysis.*;
import ddf.minim.ugens.*;
import ddf.minim.effects.*;

Minim minim;
AudioOutput out;
Oscil src, mod;

void setup(){
  size(512, 200);
  minim = new Minim(this);
  out = minim.getLineOut();
  src = new Oscil(440, 0.5, Waves.SINE);
  mod = new Oscil(100, 100, Waves.SINE);
  mod.offset.setLastValue(600);
  mod.patch(src.frequency);
  src.patch(out);
}

void mouseMoved(){
  float modFreq = map(mouseX, 0, width, 1, 1000);
  mod.setFrequency(modFreq);
  float modDepth = map(mouseY, 0, height, 1, 300);
  mod.setAmplitude(modDepth);
  
}
  
void draw(){
  background(0);
  stroke(255);
  for(int i = 0; i < out.bufferSize() - 1; i++){
    line(i, 50 + out.left.get(i) * 50, i + 1,  50 + out.left.get(i + 1) * 50);
    line(i, 150 + out.right.get(i) * 50, i + 1,  150 + out.right.get(i + 1) * 50);
  }
}