Title :
Variable step-size based-adaptive algorithm for acoustic feedback cancellation during online operation of ANC systems
Author :
Ahmed, Shakeel ; Akhtar, Muhammad Tahir ; Xi Zhang
Author_Institution :
Dept. of Commun. Eng. & Inf., Univ. of Electro-Commun., Chofu, Japan
Abstract :
In active noise control (ANC) system, the injection of white Gaussian noise (WGN) for online feedback path modeling and neutralization (FBPMN) degrades the noise-reduction-performance (NRP). In this paper: (1) a tuning free gain scheduling of WGN is used to improve the NRP of ANC system, and (2) a variable step-size is used to compensate for the decrease in the convergence of FBPMN filter due to gain scheduling. The computer simulations are carried out to demonstrate the performance of the proposed method.
Keywords :
AWGN; acoustic signal processing; active noise control; adaptive filters; adaptive scheduling; adaptive signal processing; convergence; signal denoising; ANC system online operation; FBPMN filter convergence reduction; NRP; WGN tuning free gain scheduling; acoustic feedback cancellation; active noise control system; noise reduction performance degradation; online feedback path modeling and neutralization; variable step-size; variable step-size based-adaptive algorithm; white Gaussian noise; Acoustics; Control systems; Convergence; Gain; Noise; Processor scheduling; Tuning; Acoustic Feedback; Active noise control; Online feedback path modeling and neutralization; Variable step-size;
Conference_Titel :
Signal and Information Processing (ChinaSIP), 2015 IEEE China Summit and International Conference on
Conference_Location :
Chengdu
DOI :
10.1109/ChinaSIP.2015.7230365
