Bias reduction in acoustic feedback cancellation systems with varying all-pass filters

被引：6

作者：

Boukis, C. ^{[1
]}

Mandic, D. P.

Constantinides, A. G.

机构：

[1] Athen Informat Technol, AGC Grp, GR-19002 Athens, Greece

[2] Univ London Imperial Coll Sci Technol & Med, Elect & Elect Engn Dept, CSP Grp, London SW7 2BT, England

来源：

ELECTRONICS LETTERS | 2006年 / 42卷 / 09期

关键词：

D O I：

10.1049/el:20060470

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A method for the minimisation of the bias in closed-loop system identification is presented. This is achieved using all-pass filters with time-varying poles within the forward path, which aims at decorrelating the input and the output signal. An analysis of the proposed method and expressions for the input-output correlation in the steady state are provided. Comprehensive simulations are given to support the proposed approach whereby misalignment curves are compared to those obtained with the use of simple delays.

引用

页码：556 / 558

页数：3

共 4 条

[1]

Ali M, 1998, INT CONF ACOUST SPEE, P3689, DOI 10.1109/ICASSP.1998.679684

[2]

Gardner WG, 1994, 280 MIT MED LAB PERC

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[4] Steady-state analysis of continuous adaptation in acoustic feedback reduction systems for hearing-aids [J].

Siqueira, MG ;

Alwan, A .

IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING, 2000, 8 (04) :443-453

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