Performance of sound diffusers in the low frequency range

• Autores: Javier Redondo Pastor, Luís Godinho, Paulo Amado-Mendes, Ricardo Patraquim, J.M. Herrero, T.J. Cox
• Localización: Tecniacústica 2017: 48º Congreso Español de Acústica ; Encuentro Ibérico de Acústica ; European Symposium on Underwater Acoustics Applications ; European Symposium on Sustainable Building Acoustics : A Coruña 3-6 Octubre 2017 / coord. por Antonio Calvo Manzano, Antonio Pérez López, 2017, ISBN 978-84-87985-29-4, págs. 1249-1256
• Idioma: inglés
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• Resumen

  • 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.