Resumen de Performance of sound diffusers in the low frequency range

Javier Redondo Pastor, Luís Godinho, Paulo Amado-Mendes, Ricardo Patraquim, J.M. Herrero, T.J. Cox

• The present work tries to study the relationship of the lowest frequency at which significant diffusion occurs with the dimensions, depth of the wells and total width, of a sound diffuser. In order to do so, we have implemented two different numerical schemes based on the Boundary Elements Method and on the Finite Difference Time Domain Method. Preliminary results reveal that the frequency range can be extended to low frequencies if a correct ratio between dimensions is chosen.