Title :
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
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;
Conference_Titel :
Broadband Multimedia Systems and Broadcasting (BMSB), 2014 IEEE International Symposium on
Conference_Location :
Beijing
DOI :
10.1109/BMSB.2014.6873479
