Expresión

delay = .1;

myDelay = delay*textIndex;

t = (time - inPoint) - myDelay;

if (t >= 0){

  freq =3;

  amplitude = 150;

  decay = 8.0;

  s = amplitude*Math.cos(freq*t*2*Math.PI)/Math.exp(decay*t);

  [s,s]

}else{

  value

}