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NOISE SHIELDING EFFICIENCY IN AN URBAN SYSTEM

โœ Scribed by E. Walerian; R. Janczur

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
304 KB
Volume
212
Category
Article
ISSN
0022-460X

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โœฆ Synopsis

To estimate the shielding efficiency of buildings, a model which simulates noise propagation in an urban area has been used. The simulation model assumes the equivalent highway model where vehicles are replaced by equivalent point sources which emit typical traffic noise. Interactions of acoustical waves with obstacles, on the path from the source to the observation point, are reduced to specular reflections from surfaces and diffraction at edges (wedges) of obstacles. The prepared PROP3 computer program allows estimation of sound equivalent level in dB(A) at the observation point in a built-up area, for a highway of known vehicles rate flow and vehicle average speed.

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