desc:noise/random
@init
  value   = 19; // initialize
  b_noise = 19.1919191919191919191919191919191919191919;
@sample
// -1..1
  b_noise = b_noise * b_noise;
  i_noise = floor(b_noise); // |0;
  b_noise = b_noise - i_noise;
  r0      = b_noise - 0.5;
  b_noise = b_noise + value;
// 0..1
  b_noiselast = b_noise;
  b_noise = b_noise + value;
  b_noise = b_noise * b_noise;
  b_noise = (b_noise+b_noiselast) * 0.5;
  i_noise = floor(b_noise);
  b_noise = b_noise - i_noise;
  r1      = b_noise;
//
  spl0 = r0;
  spl1 = r1;