Filtering effect of an elastic block contained in a waveguide
The solution is given to the problem of the transmission of a single waveguide mode through an elastic block contained in a rigid, lubricated parallel-plate waveguide. It is found that the reflected and transmitted waves consist of single modes of the same order as the incident mode. The way in which the transmission coefficient varies as the length of the block varies is considered, and it is found that the behaviour depends upon the particular range within which the frequency lies. The behaviour is examined for the three ranges in question with emphasis on possible lengths of complete transmission or reflection. Some results are presented for a particular case, and an application of the theory is suggested.
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Document Type: Research Article
Publication date: January 1, 1965
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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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