Title :
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
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;
Conference_Titel :
Signal Processing Proceedings, 1998. ICSP '98. 1998 Fourth International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4325-5
DOI :
10.1109/ICOSP.1998.770253
