desc:mod_mul :: ccernn.2009 :: v0.0.0
slider1: 0 < 0,63,1 > input 1
slider2: 1 < 0,63,1 > input 2
slider3: 0 < 0,63,1 > output
@slider
  input1 = slider1;
  input2 = slider2;
  output = slider3;
@init
  phase = 0;
@sample
  spl(output) = spl(input1) * spl(input2);

