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A Measurement of Sound Reflection from a Rib Wall

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The sound reflection from periodically uneven surfaces of arbitrary profile has been previously analyzed, and some numerical calculations have been carried out (Ando and Kato [16]).

In this paper, the complex sound reflection coefficient was measured by the “Interference Pattern Method” in a free field which has been developed for an accurate measurement in the near boundary of test materials. Measurements were performed with a glass fiber on a rigid plane and an oblique rib array placed on the glass fiber wall. Tests were made in dependence of the angle of wave incidence. The measured coefficients are compared with the calculated values. Some anomalous phenomena at oblique wave incidence are also discussed.
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Document Type: Research Article

Publication date: September 1, 1976

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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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