Using Mode Matching Methods and Edge Diffraction in Horn Loudspeaker Simulation
A method for simulating an expanding duct, like a horn, by mode matching techniques is described. For a horn in an infinite baffle, the modal radiation impedance and radiated pressure can be found from known relations. For a horn equipped with a small baffle or flange, however, diffraction from the edges has to be taken into account. This paper investigates how an edge diffraction term can be included, and its effect on the throat and radiation impedances and radiated pressure. Measurement results are presented, and are shown to be in good agreement with the simulations, both for a horn in a large baffle, and for a horn with a small flange.
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Document Type: Research Article
Publication date: July 1, 2015
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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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