Title :
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
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;
Conference_Titel :
Decision and Control, 1999. Proceedings of the 38th IEEE Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5250-5
DOI :
10.1109/CDC.1999.833334
