Title :
Narrowband active noise control using adaptive delay filter
Author :
Kuo, Sen M. ; Chung, Kai M.
Author_Institution :
Dept. of Electr. Eng., Northern Illinois Univ., DeKalb, IL, USA
Abstract :
An adaptive delay filter (ADF) consisting of one variable delay and gain is developed for narrowband active noise control. The ADF estimates the time delay and the gain difference between the primary and secondary paths at a given frequency. Multiple ADF systems are connected in parallel to control periodic noise with several narrowband components. Theoretical analysis shows that the amount of noise reduction is determined by the delay difference and the sampling rate.
Keywords :
acoustic signal processing; active noise control; adaptive filters; delay estimation; delay filters; signal sampling; adaptive delay filter; delay difference; gain difference estimation; narrowband active noise control; noise reduction; periodic noise control; primary path; sampling rate; secondary path; time delay estimation; Active noise reduction; Adaptive control; Adaptive filters; Control systems; Delay effects; Delay estimation; Frequency estimation; Gain; Narrowband; Programmable control;
Journal_Title :
Signal Processing Letters, IEEE
