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

fYear

2015

fDate

12-15 July 2015

Firstpage

74

Lastpage

78

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal and Information Processing (ChinaSIP), 2015 IEEE China Summit and International Conference on

Conference_Location

Chengdu

Type

conf

DOI

10.1109/ChinaSIP.2015.7230365

Filename

7230365