Prediction of scattering effects by sonic crystal noise barriers in 2-D and 3-D finite difference simulations

Research output: Contribution to conferencePaperpeer-review


Sonic crystals have been investigated in recent years both as a potential form of noise barrier, and as a form of sonic art aimed at enhancing perception of the surrounding acoustic environment. The broader aim of this research is concerned with the auralization of these structures, which has, as yet, rarely been attempted. In a previous publication, prediction of the acoustic wave propagation through 2-D arrays of solid, cylindrical scatterers embedded in air was performed in 2-D Finite Difference Time Domain (FDTD) simulations. In this paper, the model has been extended into the third dimension and the results are compared with those obtained in the previous experiment. In both the 2-D and 3-D simulations the location of the fundamental band gap corresponds with the predicted location - predictions being based on simple theoretical considerations relating the frequency of the transmission gaps to the array configuration.
Original languageEnglish
Publication statusPublished - 24 Apr 2012
EventAcoustics 2012 - Nantes, France
Duration: 23 Apr 201227 Apr 2012


ConferenceAcoustics 2012
OtherJoint meeting : 11th Congrès Français d'Acoustique and 2012 IOA annual meeting
Internet address

Cite this