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The Resonant Suspended Ceilings and their Effect on Hall Acoustics

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Resonant suspended ceiling with cross-shaped slits between the suspended ceiling plates is considered in the paper. The radiation impedance of a cross-shaped slit and the impedance of the hole itself are theoretically deduced from the radiation pattern. The impedances of the added air masses outside and inside the hole, the loss impedance, and the resonator volume impedance are taken into account while computing the hole impedance. The main resonance, the overtones and resonator interaction are considered. Changes in the real hall reverberation time, general hall sound absorption, sound absorption coefficients, slit width, and distance to the rigid surface are computed.
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Document Type: Research Article

Publication date: September 1, 1997

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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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