Diffracted Acoustic Fields about Circular Apertures in Soft and Hard Baffles
The integral equation method is applied to determine the diffracted acoustic field about circular apertures in soft and hard baffles. To verify the accuracy of the numerical algorithm, the diffracted acoustic fields about soft and hard circular disks have been computed and compared with analytical results. The same numerical method is then applied to compute the diffracted acoustic waves about circular apertures in soft and hard baffles. The Babinet principle has also been used to check whether the computed diffracted acoustic wave about a soft (hard) disk is identical to that about the circular aperture in a hard (soft) baffle. Finally, the effect of the wavenumber and the location of the acoustic source on the diffraction is systematically studied and analyzed. A general discussion based on a comparison of the diffracted acoustic fields about hard and soft baffles is given.
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Document Type: Research Article
Publication date: May 1, 1999
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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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