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Acoustical Field in Space with Obstacles. Part I: Description of the Geometrical Field

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The paper presents the mirror image method adjusted for efficient calculation of multiple reflections in the space with obstacles.

The geometrical part of the acoustical field, when noise propagates from a highway into an urban area, is described.

The procedure presented for multiple reflections is also applicable to the diffracted part of the acoustical field.

Zusammenfassung

In dieser Arbeit wird die Methode der Spiegelschallquellen vorgestellt, und zwar angepaßt an eine effiziente Berechnung mehrfacher Reflexionen in einem Raum mit Hindernissen. Es wird der geometrische Teil des akustischen Feldes für den Fall der Lärmausbreitung von Schnellstraßen in ein Wohngebiet beschrieben.

Das vorgestellte Verfahren für Mehrfachreflexionen kann auch fur den gebeugten Teil des Schallfelds angewandt werden.

Sommaire

Cet article présente une utilisation de la méthode des sources-images adaptée pour un calcul performant de réflexions multiples dans l'espace en presence d'obstacles. On décrit la partie géométrique du champ acoustique dans le cas d'un bruit se propageant d'une autoroute vers une zone urbaine. La procédure presentée pour les réflexions multiples s'applique également à la partie diffractée du champ acoustique.
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Document Type: Research Article

Publication date: April 1, 1993

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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