/*!
 *
 * welcome to wavepot
 * ------------------
 *
 * this is a live editor. you create a function named `dsp`
 * that accepts the parameter `t`, the coefficient of time,
 * which you use to generate a single sample (range -1..1)
 *
 * below is the smallest example possible, a simple sine wave
 * generator. check out more complex demos on the right ---->
 *
 * have fun!
 *
 */

tau = Math.PI*2
function beat(t){
  t = t%1;
  if(t > .5 && t < .55){
    return Math.random();
  }
  return 0;
}

function triangle(t,m){
  n = 1/m;
  return n - Math.abs(t % (2*n) - n) * m + .5;
}

function a_minor_arpegiator(t){
  t = t%1;
  if(t < 0.25){
    return triangle(t,440)
    //return Math.sin(tau*440*t);
  } else if(t < .50) {
    return triangle(t,523.25)
 //   return Math.sin(tau*523.25*t);
  } else if(t < .75) {
    return triangle(t,659.25)
   // return Math.sin(tau*659.25*t);
  }
  return triangle(t,523.25)
 // return Math.sin(tau*523.25*t);
}

function dsp(t) {
  return 0.05 * Math.sin(tau*t*440)*(1-t%1)
  + Math.sin(tau*t*220)*Math.sin(tau*t*2)*0.15
  + beat(t)*0.1
  + a_minor_arpegiator(t)*0.1;
}