Study of loudspeaker electromechanical nonlinearities and their compensation

• Type: Article in International Conference Proceedings Book
• Date: 1996

Authors

Vítor Teixeira (Author) Other; Jorge Ribeiro (Author) Other; Francisco José de Oliveira Restivo (Author) FEUP; Diamantino Rui da Silva Freitas (Author) FEUP

Conference proceedings International

Title: Proceedings of the 7th International Conference on Signal Processing Applications & Technology - ICSPAT'96

Pages: 321-325

7th International Conference on Signal Processing Applications & Technology - ICSPAT'96

Boston USA, 7 a 10 de Outubro de 1996

Scientific classification

FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering

CORDIS: Physical sciences > Physics > Acoustics

Other information

Abstract (EN): A typica l loudspeaker has some nonlinearities that interfere with its behavior causing the well-known distortions. In this paper, we study two of the major electromechanical nonlinearities, the motor force factor and the suspension compliance. First we found a model for nonlinear loudspeaker simulation. The results were compared with experimental observation, validating the model. Two types of compensation were introduced, one open loop and one closed loop approaches, showing that it is possible to improve loudspeaker performance considerably. This paper describes a preliminary study of this type of compensation, aiming to subsequent implementation using a digital signal processor (DSP).

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5