Akustische Untersuchungen an Kirchenglocken
In this paper a report on a series of measurements on Church bells is given. First the forms of the vibrations of singly excited partial tones are determined and their amplitude distribution measured on the surface of the bells. Then the frequencies of single vibrations are ascertained and set out schematically in a plan, arranged according to the number of node-circles and node meridians. Further investigations are concerned with the dependence of sound pattern on mass, material, form and strike of the clapper. Thereby an interdependence of the amplitude-distribution of the partial (tone) and the duration of contact of the clapper on the side of the bell is found. Finally the damping of the partials is reported. It appears that there is a frequency range of maximum radiation damping, which depends on the adjustment of the length of the bending wave of the bell to the length of the airborne wave.
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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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