  This article presents the use of advanced tools applied to the design of
devices that can solve specific acoustic problems, improving the already
existing devices based on classic technologies. Specifically, we have used two
different configurations of a material called Sonic Crystals, which is formed
by arrays of acoustic scatterers, to obtain acoustic screens with high
diffusion properties by means of an optimization process. This design procedure
has been carried out using a multiobjective evolutionary algorithm along to an
acoustic simulation model developed with the numerical method called Finite
Difference Time Domain (FDTD). The results obtained are discussed in terms of
both the acoustic performance and the robustness of the devices achieved.
