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Bemerkungen zur geometrischen Raumakustik

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The paper deals with the first sound reflections following the direct beam from source to listener. The number of these reflections can be greatly increased by sound mirrors suitably tilted and placed at the upper parts of the side walls in the neighbourhood of the sound source. If these first reflections occur in the 50 ms interval after the arrival of the direct sound a reinforcement takes place. Some formulae are given relating this effect to the energy density in the diffuse sound field.

The second part of the paper describes some practical applications to rooms, in which sound mirrors improve the hearing conditions and especially the intelligibility of speech. They are: tho rebuilt opera house at Hamburg, the big hall in the students hostel at Bonn, and the theatre at Hannover.
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Document Type: Research Article

Publication date: January 1, 1952

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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