3D shape optimization of loudspeakers

Peter Risby Andersen, Junghwan Kook, Vicente Cutanda Henriquez, Niels Aage

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

Abstract

Improving the performance of loudspeaker units and cabinet designs traditionally relies on a combination of trial and error, sometimes based on a lumped parameter modelling approach. During the last decades, however, large-scale numerical simulations are playing a growing role as a means of improving performance of complex engineering devices such as loudspeakers. However, a numerical model still relies on the experience of the operating engineer to make the appropriate design changes. This can be a difficult task. The use of numerical simulations combined with optimization has a huge potential for further guiding the design process of advanced industrial products where intuition alone is not sufficient. Nevertheless, broadband acoustic simulations are still very time consuming. In this work, we explore a newly proposed semi-analytical adjoint sensitivity approach based on the
boundary element method in combination with a lumped parameter model. The sensitivity analysis is used to shape optimize the cabinet of a loudspeaker using free form deformation. The objective of the optimization is to improve frequency responses and directivity patterns.
Original languageEnglish
Title of host publicationProceedings of inter-noise 2021
Number of pages11
Publication date2021
Publication statusPublished - 2021
Event50th International Congress and Exposition on Noise Control Engineering - Virtual congress, Washington, United States
Duration: 1 Aug 20215 Aug 2021

Conference

Conference50th International Congress and Exposition on Noise Control Engineering
LocationVirtual congress
CountryUnited States
CityWashington
Period01/08/202105/08/2021

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