The Cat's Eye Model
Many numerical procedures are published or under development for the evaluation of radiation from or scattering at irregular objects. It is a good practice to check such procedures with benchmark objects. A favourite object is the "cat's eye" model. Like other benchmark objects, the cat's eye can serve its purpose only when there is available a precise solution for the tasks of radiation and scattering. Therefore an analytical formulation of the sound field around a cat's eye shall be formulated which is suited for numerical evaluation. The fields in the different zones are expanded as sums of orthogonal modes of the zones. The formulation is precise in the sense of a Fourier analysis, i.e., the field matching at the zone limits is performed with the principle of minimum square error over the zone boundary surfaces.
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Document Type: Research Article
Publication date: 01 July 2005
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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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