Study of loudspeaker electromechanical nonlinearities and their compensation

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 1996

Autores

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

Ata de Conferência Internacional

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

Páginas: 321-325

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

Boston USA, 7 a 10 de Outubro de 1996

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia electrotécnica, electrónica e informática

CORDIS: Ciências Físicas > Física > Acústica

Outras Informações

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).

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5