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Title

Protección contra el ruido de tráfico: ¿pantallas o carreteras en trinchera?

AuthorsSalas, Rosa Ana; Simón, Francisco; Pfretzschner, Jaime
KeywordsAcoustic protection
Screens
Rigid corners
Diffraction
Rigid wedge
Pierce algorithms
Issue DateOct-1999
PublisherSociedad Española de Acústica
CitationXXX Jornadas Nacionales de Acústica – TecniAcústica 1999. Acústica Ambiental, Ruido y Vibraciones ; ARV06
AbstractA comparative study between the acoustic protection produced by the diffraction around corners and screens is described. Among the algorithms proposed by different authors for a rigid wedge, we have selected those of Pierce due to the practical advantages of numerical calculation. Pierce offers two approximations to the diffraction for a rigid wedge: one based in terms of auxiliary Fresnel functions by means of complex variable techniques, and a simplified version based on the asymptotic series of the Fresnel diffraction functions. It has been described the spatial zones in which both formulations can be used, especially the spatial limits for the second one. The article concludes showing that, in general, the acoustic protection provided by a screen is higher than those provided by a rigid corner with the same effective height.
Description7 pp.-- PACS nr.: 43.20.Gp, 43.50.Gf, 43.50.Vt.-- Comunicación presentada en los siguientes congresos: XXX Jornadas Nacionales de Acústica – TecniAcústica 1999. Encuentro Ibérico de Acústica (Ávila, 20-22 Octubre 1999). Publicado en número especial de la Revista de Acústica: Vol 30(1999).
URIhttp://hdl.handle.net/10261/7816
ISBN84-8785-02-5
Appears in Collections:(IA) Comunicaciones congresos
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