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论文类型：期刊论文

发表时间：2015-03-01

发表刊物：APPLIED ACOUSTICS

收录刊物：SCIE、EI

卷号：89

页面范围：71-77

ISSN号：0003-682X

关键字：Distributed Kalman filter; Microphone array network; Time delay of arrival

摘要：Using a microphone array network, a speaker tracking method based on distributed Kalman filter (DKF) in a noisy and reverberant environment is proposed. Firstly, the time delay of arrival (TDOA) in each microphone pair is estimated by the generalized cross-correlation (GCC) method. Next, the Langevin model is used as state equation to model the speaker's movement, meanwhile the measurement equations with true TDOA are deduced by linearizing the TDOA model. Finally, the moving speaker's positions are estimated by distributed Kalman filtering in a microphone array network. The proposed method is scalable. It can obtain a trajectory of the speaker's movement smoothly with excellent tracking accuracy. Simulation results verify the effectiveness of the proposed method. (C) 2014 Elsevier Ltd. All rights reserved.