A statistical approach for the diffusion of sound by reflecting surfaces in large enclosures

✍ Scribed by Dimitris Skarlatos; Dimitris Kostakis

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 889 KB
• Volume: 47
• Category: Article
• ISSN: 0003-682X
• DOI: 10.1016/0003-682x(95)00033-6

✦ Synopsis

This paper is concerned with the applicability of a time series model for the separation of the rej7ected noise energy by rough reflecting surfaces into diffuse and geometrically reflected noise. For the derivation of the theoretical model a combination of theory of geometrical acoustics and statistical acoustics was used. Here the measured noise at the receiver position is assumed to be the superposition of three types of noise: the direct which follows the inverse square law, the geometrically reflected which follows Snell's law, and the d@use noise which propagates omnidirectionally and decays following an exponential law. The solution of the problem is finally achieved in the time domain statistically, by the use of time series analysis.