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A Model to Predict Sound Reflections from Cliffs

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In the context of the Swiss railway noise calculation model sonRAIL a model to predict sound exposure level spectra for reflections from cliffs was developed and validated with measurements. It is an engineering model with low computational cost that is applicable to any type of sound sources. The scattered energy reflected from the cliffs is modelled by the superposition of secondary sources placed on the cliff surface. The only free parameter of the model, the scattering coefficient, was determined by measurements with detonations of 200 g TNTeq in the alpine part of Switzerland. Measurements yielded good agreement not only in situations with reflecting cliffs but also in the presence of large boulder fields.
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Document Type: Research Article

Publication date: March 1, 2011

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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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