The acoustical self-protection as an architectural concept is discussed. Experimental measurements and numerical simulations have been used to evaluate the acoustical influence of balcony geometry. The results have been used to derive empirical equations for predicting protection as a function of geometrical parameters. New modeling code has been based upon these empirical equations. This code is a modeling and presentation tools, that allow the architects to optimize noise reduction measures and to visualize the effects of noise propagation throughout building facades. Furthermore, it provides graphic tools for the visualization and presentation of the input and output data. It has noise control optimization features, which is very important from a financial perspective, e.g., cost versus benefit ratios.