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Coupling Geometrical and Integral Methods for Indoor and Outdoor Sound Propagation – Validation Examples

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The study of the acoustic behaviour of volumes in the presence of vibrating surfaces can be done at medium and high frequencies by using a generalised Green function. This function is defined for an associated acoustic problem and is obtained by using geometrical approaches. This method called GRIM (Green Ray Integral Method) can be applied to the decoupling of connected acoustic volumes. Applications to building acoustics, to the car industry or to outdoor sound propagation problems, such as the assessment of complex noise barriers with complex environments, are also presented. Last, the study of outdoor sound propagation can be related to indoor noise prediction.
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Document Type: Research Article

Publication date: March 1, 2001

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  • 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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