An Energetic Wave Equation for Modelling Diffuse Sound Fields – Application to Corridors
By revisiting the relationships between energy density and sound intensity, this paper presents an energetic wave equation adapted for long room such as corridors. This linear, second-order, hyperbolic equation depends on few parameters such as mean free path, absorption and scattering coefficients. We solve it by a finite difference in time domain technique and compare the results with in situ measurements carried out with a SoundField microphone to find appropriate values of the model parameters by an adjustment procedure.
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Document Type: Research Article
Publication date: May 1, 2017
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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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