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Messungen der Schallstreuung an Flachen mit periodiseh weohselnder Impedanz (Phasengitt)

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Acoustical phase lattices were constructed of HELMHOLTZ resonators tuned to different frequencies. The angular energy distribution of a quasi-plane sound wave refracted at the lattice was measured and from this a scattering coefficient was derived, which indicates the amount of energy scattered into directions other than that of the geometric reflection. The scattering coefficient is studied as a function of the phase difference of the waves reflected at different impedances, of the geometric parameters of the lattice, and of the angle of incidence. For a number of cases the angular energy distribution has been displayed as a so-called “scattering diagram” in polar coordinates.
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Document Type: Research Article

Publication date: January 1, 1962

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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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