Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8348
Title: Performance of a noise barrier within an enclosed space
Authors: Lau, SK
Tang, SK 
Keywords: Barrier
Diffuse-field theory
Enclosed space
Ray tracing method
Issue Date: 2009
Publisher: Pergamon Press
Source: Applied acoustics, 2009, v. 70, no. 1, p. 50-57 How to cite?
Journal: Applied acoustics 
Abstract: The present study involved experimental, theoretical, and numerical analyses of the insertion loss provided by rigid noise barriers in an enclosed space. The existing classical diffuse-field theory may be unable to predict the actual sound pressure level distribution and barrier insertion loss for indoor applications. Although predictions made by the ray tracing method at high frequencies are reasonably satisfactory, the method is computer-intensive and time-consuming. We propose a new formula that incorporates the effects of diffraction theory and the reflection of sound between room surfaces. Our results indicate that the present formula provides more realistic and practical predictions of the barrier insertion loss than existing approaches.
URI: http://hdl.handle.net/10397/8348
ISSN: 0003-682X
EISSN: 1872-910X
DOI: 10.1016/j.apacoust.2008.01.006
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