private final float mapF0(float val,float mean,float stddev){
  return ((((val - modelMean) / modelStddev) * stddev) + mean);
}

private final float mapF0 ( float val , float mean , float stddev ) { return ( ( ( ( val - modelMean ) / modelStddev ) * stddev ) + mean ) ; }
maps the given value to the curve .
