Out-of-band overshoot in narrowband active noise control systems

Author

Kuo, Sen M. ; Kong, Xuan ; Chen, Shaojie

Author_Institution

Dept. of Electr. Eng., Northern Illinois Univ., DeKalb, IL, USA

fYear

1998

fDate

1998

Firstpage

474

Abstract

This paper analyzes a narrowband active noise control (ANC) system using the filtered-X least mean-square (FXLMS) algorithm and proposes a method to optimize its performance. The closed-loop transfer function of the narrowband ANC system shows that the undesired out-of-band overshoot is caused by misalignment of the pole and zero as a result of the secondary path. The phase of the internally-generated sinusoidal reference signal can be optimized to compensate for the phase shift of the secondary path, thus minimizing the out-of-band overshoot

Keywords

active noise control; filtering theory; least mean squares methods; minimisation; phase estimation; poles and zeros; transfer functions; FXLMS algorithm; closed-loop transfer function; filtered-X least mean-square algorithm; minimization; narrowband active noise control systems; out-of-band overshoot; performance optimization; phase shift compensation; pole and zero; sinusoidal reference signal; Active noise reduction; Adaptive filters; Algorithm design and analysis; Control systems; Frequency; Narrowband; Noise cancellation; Noise level; Phase noise; Signal generators;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Proceedings, 1998. ICSP '98. 1998 Fourth International Conference on

Conference_Location

Beijing

Print_ISBN

0-7803-4325-5

Type

conf

DOI

10.1109/ICOSP.1998.770253

Filename

770253