How Critical the Choice of the 3D Acoustic Cloaking Shell Parameters Is
The purpose of the article is to analyze perturbations of the acoustic cloaking shell parameters described recently by Cummer et al. It is shown that infiniteness of density and stiffness is not required for zero acoustic scattering. The problem of 3D acoustic cloaking shell is found to be robust. Based on the general approach (metric transformations) proposed in 1961 by the Russian scientist Lev Dolin we present an alternative realization of the acoustic cloaking shell with higher flexibility of the cloaking shell parameters.
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Document Type: Research Article
Publication date: 2009-05-01
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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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