Measurements on the Edge-Effect in Reverberation Rooms
For four sound absorbing materials the absorption coefficient αE has been measured as a function of the relative edge-length E, i.e. the ratio of the length of the free edges to the surface area of the sample. αE and E show a linear relationship. Extrapolation to E = 0 yields α∞ for an infinitely large sample. There is a close agreement between this value of α∞ and the absorption coefficient for statistical incidence derived from measurements in the standing wave tube, assuming the material to be locally reacting.
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Document Type: Research Article
Publication date: January 1, 1967
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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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