Electrodynamic loudspeakers suspensions nonlinearities, study and measurements

Balbine Maillou * Antonin Novak 1 James Blondeau 1 Bruno Brouard 1 Jean-Michel Génevaux 1 Pierrick Lotton 1 Laurent Simon 1
* Auteur correspondant
1 LAUM - Laboratoire d'Acoustique de l'Université du Mans
Abstract : Nonlinearities characterization and identification of acoustical systems is an active research field, notably in the area of electroacoustics. An innovative characterization and identification method, based on the nonlinear convolution and the use of a synchronized swept-sine excitation signal, has recently been developped. In this paper, this method is applied to the study of the nonlinearities exhibited by the mechanical suspensions of an electrodynamic loudspeaker. Nonlinear behaviours are specially studied as function of the amplitude of the displacement of the membrane of the loudspeaker. In this context, we develop an experimental setup from the signal generator to the mobile part of the tested component, specially designed in order to obtain a great harmonic distortion measurement dynamic range and, thus, to allow the measurement of weak nonlinearities. Nonlinearities are estimated for both the external and internal suspensions independently, and for several kinds of loudspeakers. Results are compared with those obtained by other methods available in the literature.
Keywords : Nonlinearities Loudspeaker Suspensions
Type de document :
Communication dans un congrès
Société Française d'Acoustique. Acoustics 2012, Apr 2012, Nantes, France. 2012
Liste complète des métadonnées
https://hal.archives-ouvertes.fr/hal-00810870
Contributeur : Hal System <>
Soumis le : lundi 23 avril 2012 - 10:00:00
Dernière modification le : lundi 10 décembre 2018 - 14:54:02
Document(s) archivé(s) le : dimanche 18 décembre 2016 - 11:03:34

Fichier

hal-00810870.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

  • HAL Id : hal-00810870, version 1

Collections

ACOUSTICS2012 | UNIV-LEMANS | LAUM

Citation

Balbine Maillou, Antonin Novak, James Blondeau, Bruno Brouard, Jean-Michel Génevaux, et al.. Electrodynamic loudspeakers suspensions nonlinearities, study and measurements. Société Française d'Acoustique. Acoustics 2012, Apr 2012, Nantes, France. 2012. 〈hal-00810870〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

156

Téléchargements de fichiers

142

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD