点击次数：

论文类型：期刊论文

发表时间：2018-11-01

发表刊物：APPLIED ACOUSTICS

收录刊物：SCIE、Scopus

卷号：140

页面范围：188-197

ISSN号：0003-682X

关键字：Calibration; Multidimensional scaling; Total least squares; Distributed microphone array

摘要：Microphone positions have to be calibrated in distributed microphone array applications. A constrained total least squares calibration method for distributed microphone arrays is proposed in this paper. All the source event positions are first estimated by the weighted multidimensional scaling algorithm. Then the suitable source events are picked up by the TDOA selection strategy at each node. Finally, the node microphones are calibrated by the total least squares, and further refined based on constrained total least squares when the estimated results suffer from large errors. The proposed method can obtain higher calibration accuracy and works well in noise and reverberation conditions. Simulation and real-world experiment results reveal the validity of the proposed method.