A new GSC beamforming algorithm based on double affine projection

Author

Zehua Liu ; Shouhao Wu ; Yongjie Wang ; Wenxiu Guo ; Jie Zhang

Author_Institution

Shenzhen City Key Lab. of Digital TV Syst., Tsinghua Univ. in Shenzhen, Shenzhen, China

fYear

2014

fDate

25-27 June 2014

Firstpage

1

Lastpage

4

Abstract

In generalized sidelobe canceller beamforming (GSC) algorithm, the blocking matrix Alters out the desired signal in order to pass the interference signal and noise. In this paper, we propose a DAP-GSC beamforming algorithm based on double affine projection (DAP) algorithm to restrain the desired signal, when the blocking matrix (BM) can´t cancel the desired signal completely. We add a Normalize Least Mean Square (NLMS) filter between the blocking matrix (BM) and the adaptive noise cancellation (ANC). With sound source position error or array error, this method can achieve high SNR with a small number of microphones.

Keywords

array signal processing; filtering theory; interference; matrix algebra; BM; DAP-GSC beamforming algorithm; GSC beamforming algorithm; NLMS filter; adaptive noise cancellation; array error; blocking matrix; double affine projection algorithm; generalized sidelobe canceller beamforming algorithm; interference signal; normalized least mean square filter; sound source position error; Adaptive filters; Array signal processing; Arrays; Microphones; Noise; Signal processing algorithms; Speech; Audio Technology; DAP Algorithm; GSC Beamformer; Multimedia Processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Broadband Multimedia Systems and Broadcasting (BMSB), 2014 IEEE International Symposium on

Conference_Location

Beijing

Type

conf

DOI

10.1109/BMSB.2014.6873479

Filename

6873479