On the Refraction Law for a Sound Ray in a Moving Medium
A recent paper by D. Hohenwarter and F. Jelinek (Acustica - acta acustica 86 (2000) 1-14) states that the refraction law known in the literature for a sound ray in a two-dimensional stratified moving medium is approximate. In that paper, using Fermat's principle of least time, a refraction law for a sound ray is derived which is claimed to be different from those known in the literature. In the present paper, we show that, in fact, the refraction law obtained by D. Hohenwarter and F. Jelinek coincides with those known in the literature. However, these authors were most likely the first to derive the refraction law for a sound ray in a moving medium by using Fermat's principle of least time.
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Document Type: Research Article
Publication date: May 1, 2001
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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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