public static double RubberBandStretcher_GetPitchScale(IntPtr rbs)
 {
     if (IntPtr.Size == 8)
     {
         return(RubberBandNativeMethodsx64.RubberBandStretcher_GetPitchScale(rbs));
     }
     else
     {
         return(RubberBandNativeMethodsWin32.RubberBandStretcher_GetPitchScale(rbs));
     }
 }