A quantitative comparison of linear and nonlinear loudspeaker models.

Franz Maria Heuchel, Finn T. Agerkvist

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


We present a short review of models for the dynamics of the conventional moving-coil loudspeaker and a data set with which we quantitatively compare their predictive errors. The models include the effects of viscoelasticity and nonlinear stress-strain relation in the suspension, eddy-current losses in the magnet system, a finite air gap and nonlinear inductance. Vibrational wave propagation within the diaphragm is not considered. We present a model fitting technique and benchmark the loudspeaker models on the data set to establish baselines for future work. A Python implementation is made available at https://github.com/fhchl/quant-comp-ls-mod-ica22.
Original languageEnglish
Title of host publicationProceedings of the 24th International Congress on Acoustics
Number of pages8
Publication date2022
Publication statusPublished - 2022
Event24th International Congress on Acoustics - Hwabaek International Convention Center, Gyeongju, Korea, Republic of
Duration: 24 Oct 202228 Oct 2022
Conference number: 24


Conference24th International Congress on Acoustics
LocationHwabaek International Convention Center
Country/TerritoryKorea, Republic of
Internet address


  • Electro-dynamic loudspeaker
  • Modelling
  • Dynamical Systems
  • Parameter estimation


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