Multi-channel active noise control for periodic disturbances

Author

Wu, Biqing ; Bodson, Marc

Author_Institution

Dept. of Electr. Eng., Utah Univ., Salt Lake City, UT, USA

Volume

5

fYear

1999

fDate

1999

Firstpage

4971

Abstract

The paper presents a multichannel active noise control algorithm that is designed to reject periodic noise signals of unknown frequency. The algorithm is the extension of a previously-proposed disturbance rejection algorithm in which the frequency of the disturbance is estimated through an adaptive notch filter and the estimate is used in a feedforward disturbance rejection scheme. Improvements over the earlier approach include a better frequency estimation scheme and an extension to multichannel systems. Experimental results on an active noise control testbed demonstrate the validity of the analytical results and the success of the method in a practical environment

Keywords

active noise control; adaptive filters; feedforward; filtering theory; frequency estimation; notch filters; time-varying systems; adaptive notch filter; disturbance frequency estimation; disturbance rejection algorithm; feedforward disturbance rejection scheme; multichannel active noise control algorithm; periodic disturbances; periodic noise signal rejection; Acoustic noise; Active noise reduction; Additive noise; Control systems; Frequency estimation; Loudspeakers; Microphones; Noise level; Signal processing algorithms; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 1999. Proceedings of the 38th IEEE Conference on

Conference_Location

Phoenix, AZ

ISSN

0191-2216

Print_ISBN

0-7803-5250-5

Type

conf

DOI

10.1109/CDC.1999.833334

Filename

833334