Control of a hands-free telephone set

被引：11

作者：

Breining, C

机构：

[1] Technische Hochschule Darmstadt, Darmstadt, Germany

来源：

SIGNAL PROCESSING | 1997年 / 61卷 / 02期

关键词：

acoustic echo cancellation; stepsize control; state detection; fuzzy control;

D O I：

10.1016/S0165-1684(97)00098-4

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 [电气工程]; 0809 [电子科学与技术];

摘要：

In this paper, we discuss different methods of double talk detection used for echo cancellation in a hands-free telephone set. We deduce a general state-space representation of the set, which leads to state-dependent structures for stepsize control. The approach is further generalized by introducing fuzzy logic and fuzzy state memberships. Finally, first results are shown which are obtained with identical detection methods, but applying different control structures. (C) 1997 Elsevier Science B.V.

引用

页码：131 / 143

页数：13

共 14 条

[1]

BELLANGER M, 1989, DIGITAL PROCESSING S, P305

[2]

FRENZEL R, 1992, VDI FORTSCHRITT B 10, V228, P83

[3]

GAY SL, 1995, P IEEE INT C AC SPEE, P3023

[4]

GILLOIRE A, 1995, P INT WORKSH AC ECH, P115

[5]

HAYKIN S., 1986, ADAPTIVE FILTER THEO

[6]

HEITKAMPER P, 1995, VDI FORTSCHRITT B 10, V380

[7]

HEITKAMPER P, 1995, P IEEE ICASSP, P3047

[8]

Klir G. J., 1996, Fuzzy Sets and Fuzzy Logic: Theory and Applications

[9]

Exponentially Weighted Stepsize NLMS Adaptive Filter Based on the Statistics of a Room Impulse Response [J].

Makino, Shoji ;

Kaneda, Yutaka ;

Koizumi, Nobuo .

IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING, 1993, 1 (01) :101-108

[10]

MARX J, 1996, VDI FORTSCHRITT B 10, V400, P82

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