Overdetermined Blind Separation for Real Convolutive Mixtures of Speech Based on Multistage ICA Using Subarray Processing(Speech/Acoustic Signal Processing)(<Special Section>Digital Signal Processing)
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概要
- 論文の詳細を見る
We propose a new algorithm for overdetermined blind source separation (BSS) based on multistage independent component analysis (MSICA). To improve the separation performance, we have proposed MSICA in which frequency-domain ICA and time-domain ICA are cascaded. In the original MSICA, the specific mixing model, where the number of microphones is equal to that of sources, was assumed. However, additional microphones are required to achieve an improved separation performance under reverberant environments. This leads to alternative problems, e. g., a complication of the permutation problem. In order to solve them, we propose a new extended MSICA using subarray processing, where the number of microphones and that of sources are set to be the same in every subarray. The experimental results obtained under the real environment reveal that the separation performance of the proposed MSICA is improved as the number of microphones is increased.
- 社団法人電子情報通信学会の論文
- 2004-08-01
著者
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SARUWATARI Hiroshi
Nara Institute of Science and Technology
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Shikano Kiyohiro
Graduate School Of Information Science Nara Institute Of Science And Technology
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Saruwatari Hiroshi
Graduate School Of Information Science Nara Institute Of Science And Technology
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Shikano K
Chiba University And National Institute Of Information And Communications Technology
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Sawada H
Graduate School Of Information Science Nara Institute Of Science And Technology
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Abe Hiroshi
Graduate School of Engineering, Doctor's Courses, Oita University
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NISHIKAWA Tsuyoki
Graduate School of Information Science, Nara Institute of Science and Technology
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KAMINUMA Atsunobu
Nissan Research Center, NISSAN MOTOR CO., LTD.
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Kaminuma Atsunobu
Nissan Research Center Nissan Motor Co. Ltd.
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Nishikawa Tsuyoki
Graduate School Of Information Science Nara Institute Of Science And Technology
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Abe Hiroshi
Graduate School Of Information Science Nara Institute Of Science And Technology
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Abe Hiroshi
Graduate School Of Engineering Doctor's Courses Oita University
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