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Optimization of Electrodynamic Loudspeaker-Design Parameters by Using a Numerical Calculation Scheme

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Electrodynamic loudspeaker-design parameters are studied by using a recently developed modeling scheme for the numerical simulation of magnetomechanical transducers. This simulation scheme is based on a Finite-Element-Method (FEM) and allows the precise and efficient calculation of the magnetic, mechanical and acoustic fields including their couplings. Therewith, the complex dynamic behavior of moving coil drivers can be studied and, furthermore, an appropriate computer-aided-design including an optimization of critical parameters can be established.

In the present paper the validity of the simulation models is, first, verified by comparing computed and measured results. The calculated results show good agreement with the measured data. Furtheron, two practical applications, the elimination of response dips at intermediate frequencies and the improvement in efficiency for higher frequencies, are presented.
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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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