Opens in a new tab

AES E-Library

← Back to search

Convention Paper

A New Method for Identification of Nonlinear Systems Using MISO Model with Swept-Sine Technique: Application to Loudspeaker Analysis

Authors: Kadlec, Frantisek; Lotton, Pierrick; Novak, Antonin; Simon, Laurent

AES Convention 124 · Paper 7441 · May 2008

Abstract

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.

Details

Published in
AES Convention 124
AES Convention
124
Paper number
7441
Publication date
May 6, 2008
Session subject
Software, Instrumentation, and Measurement
Affiliation
Czech Technical University;Universite du Maine, LAUM (See document for exact affiliation information.)
Type
Convention Paper