Fast time domain modeling of surface scattering from reflectors and diffusers

Cox, TJ

Abstract

Time-domain prediction models have been developed for
auditorium reflectors and room acoustic diffusers. The models are time-domain equivalents of the single-frequency formulations that exploit the Kirchhoff boundary conditions. Consequently, they are approximate, wave-based solutions to the Kirchhoff integral equation using
surface meshes. The new time-domain formulations are validated by comparison to their frequency-domain equivalents for three different surfaces: a plane surface, a curved reflector, and a Schroeder diffuser. In
terms of computation time and accuracy, the new models lie between the finite difference time domain and geometric room models.

Citation

Cox, T. (2015). Fast time domain modeling of surface scattering from reflectors and diffusers. ˜The œJournal of the Acoustical Society of America (Online), 137(6), 483-489. https://doi.org/10.1121/1.4921675

• Journal Article Type: Article
• Acceptance Date: May 12, 2015
• Online Publication Date: May 29, 2015
• Publication Date: May 29, 2015
• Deposit Date: Jun 12, 2015
• Publicly Available Date: Apr 5, 2016
• Journal: The Journal of the Acoustical Society of America (JASA)
• Print ISSN: 0001-4966
• Peer Reviewed: Peer Reviewed
• Volume: 137
• Issue: 6
• Pages: 483-489
• DOI: https://doi.org/10.1121/1.4921675
• Publisher URL: http://dx.doi.org/10.1121/1.4921675
• Related Public URLs: http://scitation.aip.org/content/asa/journal/jasa
• Additional Information: Access Information : Copyright (2015) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.