This work presents a Multiple Input Single Output (MISO) nonlinear model in combination with sine-sweep signals as a method for nonlinear system identification. The method is used for identification of loudspeaker nonlinearities and can be applied to nonlinearities of any audio components. It extends the method based on nonlinear convolution presented by Farina, providing a nonlinear model that allows to simulate the identified nonlinear system. The MISO model consists of a parallel combination of nonlinear branches containing linear filters and memory-less power-law distortion functions. Once the harmonic distortion components are identified by the method of Farina, the linear filters of the MISO model can be derived. The practical application of the method is demonstrated on a loudspeaker.

Authors: Kadlec, Frantisek; Lotton, Pierrick; Novak, Antonin; Simon, Laurent
Affiliations: Czech Technical University;Universite du Maine, LAUM(See document for exact affiliation information.)
AES Convention: 124 (May 2008) Paper Number: 7441
Publication Date: May 1, 2008 Import into BibTeX
Subject: Software, Instrumentation, and Measurement
Permalink: http://www.aes.org/e-lib/browse.cfm?elib=14571

Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 124Papers)   /124/7441.pdf

Start a discussion about this paper!