Optimization of realistic loudspeaker models with respect to basic response characteristics

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Abstract

A numerical model for optimization of loudspeakers mounted in infinite baffles is presented in this paper. The optimization is carried out by using objective functions based on basic response characteristics for loudspeakers such as the on axis frequency response. In-order to create a realistic model of the speaker we include the
excitation of the speaker from the motor system. The interaction between acoustic medium and structure is modelled with the finite element method. As most loudspeaker drivers are nearly symmetric, the presented model is a 2D axisymmetric finite element model. The exterior domain is modelled with perfectly matched
layers, which ensure free-field radiation conditions. Optimized designs for a selection of objective functions are presented and discussed.
Original languageEnglish
Title of host publicationProceedings of 23rd International Congress on Acoustics
Number of pages8
PublisherGerman Acoustical Society (DEGA)
Publication date2019
Publication statusPublished - 2019
Event23rd International Congress on Acoustics - Eurogress, Aachen , Germany
Duration: 9 Sep 201913 Sep 2019
http://www.ica2019.org/

Conference

Conference23rd International Congress on Acoustics
LocationEurogress
CountryGermany
CityAachen
Period09/09/201913/09/2019
Internet address

Keywords

  • Optimization
  • FEM
  • Loudspeaker
  • Materials

Cite this

Nielsen, D. G., Agerkvist, F. T., & Jensen, J. S. (2019). Optimization of realistic loudspeaker models with respect to basic response characteristics. In Proceedings of 23rd International Congress on Acoustics German Acoustical Society (DEGA).
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booktitle = "Proceedings of 23rd International Congress on Acoustics",
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Nielsen, DG, Agerkvist, FT & Jensen, JS 2019, Optimization of realistic loudspeaker models with respect to basic response characteristics. in Proceedings of 23rd International Congress on Acoustics. German Acoustical Society (DEGA), 23rd International Congress on Acoustics , Aachen , Germany, 09/09/2019.

Optimization of realistic loudspeaker models with respect to basic response characteristics. / Nielsen, Daniel Gert; Agerkvist, Finn T.; Jensen, Jakob Søndergaard.

Proceedings of 23rd International Congress on Acoustics. German Acoustical Society (DEGA), 2019.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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AU - Agerkvist, Finn T.

AU - Jensen, Jakob Søndergaard

PY - 2019

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N2 - A numerical model for optimization of loudspeakers mounted in infinite baffles is presented in this paper. The optimization is carried out by using objective functions based on basic response characteristics for loudspeakers such as the on axis frequency response. In-order to create a realistic model of the speaker we include theexcitation of the speaker from the motor system. The interaction between acoustic medium and structure is modelled with the finite element method. As most loudspeaker drivers are nearly symmetric, the presented model is a 2D axisymmetric finite element model. The exterior domain is modelled with perfectly matchedlayers, which ensure free-field radiation conditions. Optimized designs for a selection of objective functions are presented and discussed.

AB - A numerical model for optimization of loudspeakers mounted in infinite baffles is presented in this paper. The optimization is carried out by using objective functions based on basic response characteristics for loudspeakers such as the on axis frequency response. In-order to create a realistic model of the speaker we include theexcitation of the speaker from the motor system. The interaction between acoustic medium and structure is modelled with the finite element method. As most loudspeaker drivers are nearly symmetric, the presented model is a 2D axisymmetric finite element model. The exterior domain is modelled with perfectly matchedlayers, which ensure free-field radiation conditions. Optimized designs for a selection of objective functions are presented and discussed.

KW - Optimization

KW - FEM

KW - Loudspeaker

KW - Materials

M3 - Article in proceedings

BT - Proceedings of 23rd International Congress on Acoustics

PB - German Acoustical Society (DEGA)

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Nielsen DG, Agerkvist FT, Jensen JS. Optimization of realistic loudspeaker models with respect to basic response characteristics. In Proceedings of 23rd International Congress on Acoustics. German Acoustical Society (DEGA). 2019