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The Role of Radial Ribs on the Resonance Board of the Guitar. II. Their Effect on the Nodal Lines of the Board (Holographic Study)

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The electroacoustic method has been used to determine the resonant acoustic responses of the body of a guitar, whose upper board had small ribs, and the natural oscillations and their frequencies were found and their amplitude frequency characteristics recorded. A new method of exciting the board through sinusoidal oscillations by electromagnetic excitation was used, at frequencies corresponding to those of the natural body oscillations: the interference figures on the resonance board were recorded by the holographic interferometer method. The changes were observed in the appearance of the interference figures as a function of the exciting force, of the frequency of excitation and of the increase in the number of small ribs attached to the resonance board.
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Document Type: Research Article

Publication date: September 1, 1977

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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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