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Transactions: WSEAS TRANSACTIONS ON SIGNAL PROCESSING
Transactions ID Number: 42-240
Full Name: Chiahsin Yang
Position: Ph.D. Candidate
Age: ON
Sex: Male
Address: Lab 905, Engineering Building No.5, 1001 Ta Hsueh Road, Hsinchu 300
Country: TAIWAN
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E-mail address: chyang.ece92g@nctu.edu.tw
Other E-mails: chyang.ece94g@nctu.edu.tw
Title of the Paper: Adaptive Beamforming with Novel Blocking Matrix Design Using Matched Filter Ratio Array for Generalized Sidelobe Canceller
Authors as they appear in the Paper: Jwu-sheng Hu and Chia-hsin Yang
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Number of paper pages: 10
Abstract: A novel blocking matrix design technique is proposed for adaptive beamforming of microphone array based on the generalized sidelobe canceller (GSC) structure. The classical GSC presented by Griffiths and Jim suffers from desired signal cancellation problems due to the complicated acoustic environment. To overcome this issue, this work utilizes the pseudo-inverse property of matched filter array and subarray structure to design a new blocking matrix of the GSC. For practical implementation, matched filter ratios between microphone pairs are estimated, as compared with estimating matched filters from the sound source to each microphone. In addition, since most additive noises in signal are non-Gaussian, the adaptive filtering is applied to adaptive interference canceller to enhance the robustness to the system model dynamics. Simulation results are presented to show the effectiveness of the proposed method.
Keywords: GSC, beamformer, matched filters, subarray, speech enhancement
EXTENSION of the file: .pdf
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