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This research develops a compact and transparent analytical model of current-driven loudspeakers to assess their associated nonlinearities and harmonic distortion. Taylor polynomials are used to derive simple expressions for the first five harmonic distortion components of the spectrum: the significance of each parameter under consideration is rendered transparent using this methodology. This analytical approach is validated by performing a numerical analysis using Simulink software and can easily be implemented using a standard spreadsheet application. The measured parameters of a midrange generic transducer are used to compare the numerical and analytical approaches. The analytical approach is shown to be effective, and it enables the analysis of the evenness property of a given influence parameter. The analytical approach can also be used to model nonlinear parameters as a function of the diaphragm speed.
Author (s): Gaviot, Etienne; Erza, Mehran; Polet, Frédéric; Camberlein, Lionel; Bêche, Bruno
Affiliation:
Laboratoire d’Acoustique de l’Université du Maine, Micro Cap Ouest, LAUM, UMR CNRS, Le Mans, France; Institut de Physique de Rennes, IPR, UMR CNRS, Rennes, France; Institut Universitaire de France (IUF), Paris, France
(See document for exact affiliation information.)
Publication Date:
2014-03-06
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Permalink: https://aes2.org/publications/elibrary-page/?id=17128
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Gaviot, Etienne; Erza, Mehran; Polet, Frédéric; Camberlein, Lionel; Bêche, Bruno; 2014; A Versatile Analytical Approach for Assessing Harmonic Distortion in Current-Driven Electrodynamic Loudspeakers [PDF]; Laboratoire d’Acoustique de l’Université du Maine, Micro Cap Ouest, LAUM, UMR CNRS, Le Mans, France; Institut de Physique de Rennes, IPR, UMR CNRS, Rennes, France; Institut Universitaire de France (IUF), Paris, France; Paper ; Available from: https://aes2.org/publications/elibrary-page/?id=17128
Gaviot, Etienne; Erza, Mehran; Polet, Frédéric; Camberlein, Lionel; Bêche, Bruno; A Versatile Analytical Approach for Assessing Harmonic Distortion in Current-Driven Electrodynamic Loudspeakers [PDF]; Laboratoire d’Acoustique de l’Université du Maine, Micro Cap Ouest, LAUM, UMR CNRS, Le Mans, France; Institut de Physique de Rennes, IPR, UMR CNRS, Rennes, France; Institut Universitaire de France (IUF), Paris, France; Paper ; 2014 Available: https://aes2.org/publications/elibrary-page/?id=17128
@article{gaviot2014a,
author={gaviot etienne and erza mehran and polet frédéric and camberlein lionel and bêche bruno},
journal={journal of the audio engineering society},
title={a versatile analytical approach for assessing harmonic distortion in current-driven electrodynamic loudspeakers},
year={2014},
volume={62},
issue={3},
pages={127-144},
month={march},}
TY – paper
TI – A Versatile Analytical Approach for Assessing Harmonic Distortion in Current-Driven Electrodynamic Loudspeakers
SP – 127 EP – 144
AU – Gaviot, Etienne
AU – Erza, Mehran
AU – Polet, Frédéric
AU – Camberlein, Lionel
AU – Bêche, Bruno
PY – 2014
JO – Journal of the Audio Engineering Society
VO – 62
IS – 3
Y1 – March 2014