Comparison of Different Methods for Simulating Acoustic Diffuse Field Excitations
In this paper various methods of calculating the diffuse field in reverberant rooms are considered. In particular, a plane-wave model and a stochastic response analysis, which both are able to predict a diffuse field based on its stochastic properties, are compared in detail. While the former directly calculates the sound field generated by a number of plane wave sources, the later decomposes the energy density of the diffuse field. Additionally, the sound field in a reverberant room is also determined by means of a fast multipole boundary element method. The resulting diffuse fields from those methodologies are compared. Furthermore, the efficiency of applying these diffuse field models in a simulation of sound transmission loss experiments is discussed, and the accuracy of the calculated transmission loss with different diffuse excitations is validated by means of measurements.
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Document Type: Research Article
Publication date: November 1, 2013
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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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