Energetic Sound Propagation in Rooms

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Abstract:

For most practical purposes in room acoustics it is sufficient to restrict sound field calculations to the propagation of sound energy. In this paper, an energetic approach to sound field calculation is presented which is based on a simple integral equation. It allows the calculation of the energy density and the sound intensity, both steady state and transient. Furthermore, the decay time of an enclosure can be obtained by a simple iteration scheme, the inverse problem (calculation of absorption coefficient from given reverberation time) can be solved in a similar way. The methods are illustrated by simple examples.

Document Type: Research Article

Publication date: July 1, 1997

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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