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Die Diffusion in der Raumakustik

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It has become more and more evident in the last few years that the classical quantities are not sufficient to describe adequately the acoustic behaviour of a room. In addition to the volume, the reverberation time, and the shape of the room determined by geometrical considerations, the homogeneity of the sound field, which may also be called “diffusion” plays a very important part. It is shown in this paper that the frequency irregularities existing in the stationary state, which have been known for a long time, are not a direct measure for this diffusion. It is possible, however, to prove empirically that the “mean height of a peak” of these irregularities is an important parameter directly related to the homogeneity of the sound field. It is determined — for the frequency regions around 375 c/s and 1650 c/s — for 11 rooms, whose volumes range from 37 m3 to 20000 m3.
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Document Type: Research Article

Publication date: January 1, 1952

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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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