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A Wide Frequency Band Anechoic Water Tank

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A classification of different possible lining materials for anechoic water tanks is given together with a detailed discussion of the physical properties of the materials influencing their reflection and absorption properties. These properties are preliminary measured by a number of materials leading to the choice of a cork and aluminium powder loaded butyl rubber lining backed by marine plywood for the final lined water tank construction. Measurements in the finally lined tank of reverberation times, amplitude reflection coefficients and spherical divergence of signals for frequencies ranging from 10 kHz to 300 kHz show excellent anechoic qualities of the lined tank in this frequency range. A special emphasis has been put on the investigation of the disturbing influence arising from a free water surface.
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Document Type: Research Article

Publication date: February 1, 1975

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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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