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Group Approach to a Problem of Grazing Propagation of Acoustic Waves along a Free Solid Surface

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Although reflection coefficients for bulk acoustic waves incident on a solid surface are readily derived with a classic technique, there is a difficulty concerning the critical incidence (i.e. incidence at an angle equal to 90 degrees) of these waves. This is because a classic solution for this limiting case yields zero values of wave amplitudes. It was shown that a conformal transformation of a wave equation allows us to consider solutions to the problems of critical and of oblique reflection as particular cases of a more general one-parametric solution.

Document Type: Short Communication


Publication date: November 1, 2011

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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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