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THE IMPORTANCE OF SOURCE TYPE ON THE ASSESSMENT OF NOISE BARRIERS

โœ Scribed by P. JEAN; J. DEFRANCE; Y. GABILLET

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
220 KB
Volume
226
Category
Article
ISSN
0022-460X

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โœฆ Synopsis

A two-dimensional (2-D) boundary element method is used to compute the e$ciency of noise barriers in attenuating tra$c noise. Di!erent types of source are considered. Point sources and incoherent line sources can be introduced as results of a post-treatment of the 2-D pressure "eld. The insertion loss of barriers is signi"cantly reduced in the case of more realistic incoherent line sources, as compared to that of coherent line sources. However, the relative e$ciency of tops added to a straight barrier is higher.

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