Double talk protection of acoustic echo cancellation based on weighted-sum NLMS algorithm

Author

Cheng, Xiaobin ; Jian Xu ; Li, Xiaodong ; Tian, Jing

Author_Institution

Inst. of Acoust., Acad. Sinica, Beijing, China

Volume

1

fYear

2002

fDate

26-30 Aug. 2002

Firstpage

297

Abstract

The paper presents a new method of double talk protection in acoustic echo cancellation (AEC), named weighted-sum normalization. The weighted-sum method replaces the normalization term of the traditional NLMS (normalized least mean square) algorithm by the sum of the weighted power of the residue echo signal and the power of the reference signal. Emulation results on AEC have shown that this method can stabilize the adaptive filter in the case of large fluctuations of the near-end signal, such as in the double talk situation.

Keywords

FIR filters; acoustic signal processing; adaptive filters; audio signal processing; echo suppression; least mean squares methods; speech processing; FIR filter; acoustic echo cancellation; adaptive filter; double talk protection; finite impulse response filter; normalized LMS algorithm; reference signal; residue echo signal; weighted-sum normalization; Acoustics; Adaptive filters; Background noise; Echo cancellers; Finite impulse response filter; Microphones; Protection; Speech enhancement; Speech synthesis; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, 2002 6th International Conference on

Print_ISBN

0-7803-7488-6

Type

conf

DOI

10.1109/ICOSP.2002.1181049

Filename

1181049