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Schallrichtungsverteilung im Hallraum bei 2000 Hz und Kantenbeugung an absorbierenden Materialien

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The first part of this work deals with the measurement of the directional distribution of incident sound at 2000 c/s in the large reverberation room of the III. Physikalisches Institut. The number of scattering objects in the room is taken as a parameter. It is shown that a diffuse sound field is achieved with a limited number of diffusors, even if one wall of the room is completely covered with a highly absorbent material.

The second part of this work deals with the dependence of the measured absorption coefficient on the geometric arrangement of the absorbent material. It was again found that correct results are only obtained, if the sound field is sufficiently diffuse and one wall is completely covered with the absorbent material; only in this case good agreement is found between the absorption coefficient measured in the reverberation room and the absorption coefficient calculated from impedance measurements with a Kundt tube.

Furthermore the sound level in the vicinity of the walls, especially at the edges and in the corners, is measured with the floor completely covered with absorbent material.
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Document Type: Research Article

Publication date: January 1, 1963

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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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