An Approach to Solve Local Minimum Problem in Sound Source and Microphone Localization(Engineering Acoustics)
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概要
- 論文の詳細を見る
We previously proposed a method of sound source and microphone localization. The method estimates the locations of sound sources and microphones from only time differences of arrival between signals picked up by microphones even if all their locations are unknown. However, there is a problem that some estimation results converge to local minimum solutions because this method estimates locations iteratively and the error function has multiple minima. In this paper, we present a new iterative method to solve the local minimum problem. This method achieves accurate estimation by selecting effective initial locations from many random initial locations. The computer simulation and experimental results demonstrate that the presented method eliminates most local minimum solutions. Furthermore, the computational complexity of the presented method is similar to that of the previous method.
- 社団法人電子情報通信学会の論文
- 2007-12-01
著者
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HANEDA Yoichi
NTT Cyber Space Laboratories, NTT Corporation
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KATAOKA Akitoshi
Faculty of Science and Technology, Ryukoku University
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Furuya Ken'ichi
Ntt Cyber Space Laboratories Ntt Corporation
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Kobayashi Kazunori
Ntt Cyber Space Laboratories Ntt Corporation
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Haneda Yoichi
Ntt Cyber Space Laboratories Ntt Corporation
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Haneda Yoichi
Ntt Cyber Space Laboratories
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Kataoka Akitoshi
NTT Cyber Space Laboratories
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Kataoka A
Faculty Of Science And Technology Ryukoku University
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