SOUND PROPAGATION OVER NOISE BARRIERS WITH ABSORBING GROUND
โ Scribed by D. Duhamel; P. Sergent
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 347 KB
- Volume
- 218
- Category
- Article
- ISSN
- 0022-460X
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๐ SIMILAR VOLUMES
In this paper, the Dual Boundary Element Method is formulated and applied to study outdoor sound propagation where acoustic barriers are modelled as non-thickness bodies that may have different impedance conditions at each side. Standard and hypersingular integral equations are applied on each side
Finite element predictions and corresponding measurements for sound attenuation and phase speed in a circular duct lined with poroelastic noise control foams are presented in this article. In the present study, four con"gurations having di!erent lining thickness are considered for three types of foa
This paper extends an earlier study on sound propagation over poro-elastic layered ground to range-dependent and topographic ground. The model is based on a pressure}velocity "nite-di!erence formulation and is coded in the computer program PORAC. To highlight the in#uence of range-dependent paramete