Modelling Viscoelasticity of Loudspeaker Suspensions using Retardation Spectra

Tobias Ritter (Invited author), Finn T. Agerkvist (Invited author)

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

Abstract

It is well known that, due to viscoelastic eects in the suspension, the displacement of the loudspeaker increases with decreasing frequency below the resonance. Present creep models are either not precise enough or purely empirical and not derived from the basis of physics. In this investigation, the viscoelastic retardation spectrum, which provides a more fundamental description of the suspension viscoelasticity, is rst used to explain the accuracy of the empirical LOG creep model (Knudsen et al.). Then, two extensions to the LOG model are proposed which include the low and high frequency limit of the compliance, not accounted for in the original LOG model. The new creep models are veried by measurements on two 5.5 loudspeakers with different surrounds.
Original languageEnglish
Title of host publicationThe 129. Convention for Audio Engineering Society
Publication date2010
Publication statusPublished - 2010
Event129th Convention of the Audio Engineering Society - San Francisco, CA, United States
Duration: 4 Nov 20107 Nov 2010
Conference number: 129
http://www.aes.org/events/129/

Conference

Conference129th Convention of the Audio Engineering Society
Number129
CountryUnited States
CitySan Francisco, CA
Period04/11/201007/11/2010
Internet address

Cite this

Ritter, T., & Agerkvist, F. T. (2010). Modelling Viscoelasticity of Loudspeaker Suspensions using Retardation Spectra. In The 129. Convention for Audio Engineering Society