A quantitative comparison of linear and nonlinear loudspeaker models.

Franz Maria Heuchel; Finn T. Agerkvist

A quantitative comparison of linear and nonlinear loudspeaker models.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

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 language	English
Title of host publication	Proceedings of the 24^th International Congress on Acoustics
Number of pages	8
Publication date	2022
Publication status	Published - 2022
Event	24^th International Congress on Acoustics - Hwabaek International Convention Center, Gyeongju, Korea, Republic of Duration: 24 Oct 2022 → 28 Oct 2022 Conference number: 24 https://ica2022korea.org

Conference

Conference	24^th International Congress on Acoustics
Number	24
Location	Hwabaek International Convention Center
Country/Territory	Korea, Republic of
City	Gyeongju
Period	24/10/2022 → 28/10/2022
Internet address	https://ica2022korea.org

Keywords

Electro-dynamic loudspeaker
Modelling
Dynamical Systems
Parameter estimation

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title = "A quantitative comparison of linear and nonlinear loudspeaker models.",

abstract = "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.",

keywords = "Electro-dynamic loudspeaker, Modelling, Dynamical Systems, Parameter estimation",

author = "Heuchel, {Franz Maria} and Agerkvist, {Finn T.}",

year = "2022",

language = "English",

booktitle = "Proceedings of the 24th International Congress on Acoustics",

note = "24<sup>th</sup> International Congress on Acoustics, ICA 2022 ; Conference date: 24-10-2022 Through 28-10-2022",

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TY - GEN

T1 - A quantitative comparison of linear and nonlinear loudspeaker models.

AU - Heuchel, Franz Maria

AU - Agerkvist, Finn T.

N1 - Conference code: 24

PY - 2022

Y1 - 2022

N2 - 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.

AB - 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.

KW - Electro-dynamic loudspeaker

KW - Modelling

KW - Dynamical Systems

KW - Parameter estimation

M3 - Article in proceedings

BT - Proceedings of the 24th International Congress on Acoustics

T2 - 24<sup>th</sup> International Congress on Acoustics

Y2 - 24 October 2022 through 28 October 2022

ER -

A quantitative comparison of linear and nonlinear loudspeaker models.

Abstract

Conference

Keywords

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