DocumentCode :
3415307
Title :
Adaptive signal blocking for generalized sidelobe canceller using matched filter array
Author :
Hu, Jwu-Sheng ; Yang, Chia-Hsing
Author_Institution :
Dept. of Electr. & Control Eng., Nat. Chiao-Tung Univ., Hsinchu
fYear :
2008
fDate :
March 31 2008-April 4 2008
Firstpage :
2597
Lastpage :
2600
Abstract :
This work proposes an adaptive beamformer based on generalized sidelobe canceller (GSC) structure with novel blocking matrix design. The classical GSC presented by Griffiths and Jim suffers from desired signal cancellation problems due to the complicated acoustic environment. This work utilizes the pseudo-inverse property of matched filters and subarray structure to design a new blocking matrix of the GSC. For practical implementation, matched filter ratios between microphone pairs are estimated, instead of estimating matched filters from the sound source to each microphone. Simulation results are presented to show the effectiveness of the proposed method.
Keywords :
acoustic signal processing; adaptive filters; adaptive signal processing; array signal processing; interference suppression; matched filters; acoustic environment; adaptive beamformer; adaptive signal blocking; blocking matrix design; generalized sidelobe canceller; matched filter array; microphone pairs; pseudo-inverse property; signal cancellation problems; sound source; subarray structure; Acoustic noise; Adaptive arrays; Interference; Matched filters; Microphone arrays; Programmable control; Reverberation; Signal to noise ratio; Transfer functions; Working environment noise; GSC; matched filters; subarray;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on
Conference_Location :
Las Vegas, NV
ISSN :
1520-6149
Print_ISBN :
978-1-4244-1483-3
Electronic_ISBN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.2008.4518180
Filename :
4518180
Link To Document :
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