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.

Authors: Gaviot, Etienne; Erza, Mehran; Polet, Frédéric; Camberlein, Lionel; Bêche, Bruno
Affiliations: 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.)
JAES Volume 62 Issue 3 pp. 127-144; March 2014
Publication Date: March 20, 2014

Click to purchase paper as a non-member or you can login as an AES member to see more options.

No AES members have commented on this paper yet.

Subscribe to this discussion

To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.