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このアイテムの引用には次の識別子を使用してください:
http://hdl.handle.net/10119/4621
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| タイトル: | Noise reduction method based on generalized subtractive beamformer |
| 著者: | Li, Junfeng
Akagi, Masato |
| キーワード: | Noise reduction
Generalized subtractive beamformer
Coherence function |
| 発行日: | 2006-07-01 |
| 出版者: | Acoustical Society of Japan（日本音響学会） |
| 誌名: | Acoustical science and technology |
| 巻: | 27 |
| 号: | 4 |
| 開始ページ: | 206 |
| 終了ページ: | 215 |
| DOI: | 10.1250/ast.27.206 |
| 抄録: | Combating noise signals is still a very important and challenging research topic. Previously, we presented a subtractive-beam former-based noise reduction algorithm using paired microphones, which was shown to be effective in reducing directional noise. However, its basic assumption, namely a perfectly coherent noise field, is generally not satisfied in real-world environments. In this paper, we develop a general expression for the original algorithm we suggested earlier, on the basis of a generalized subtractive beam former and by relaxing the strict assumption to that of an arbitrary noise field. Following ideas similar to those of the original algorithm, the generalized algorithm with a generalized sidelobe canceller (GSC)-like structure is derived. A theoretical analysis is then presented to show the linkage between this generalized algorithm and the original algorithm, and to show its noise reduction performance in theoretically defined noise fields. Finally, the superiority of the proposed noise reduction algorithm to other comparable algorithms was verified by experiments using multichannel recordings. |
| Rights: | 日本音響学会, Junfeng Li and Masato Akagi, Acoustical science and technology, 27(4), 2006, 206-215. |
| URI: | http://hdl.handle.net/10119/4621 |
| 資料タイプ: | publisher |
| 出現コレクション: | b10-1. 雑誌掲載論文 (Journal Articles)
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このアイテムのファイル:
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記述 |
サイズ | 形式 |
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| 9872.pdf | | 227Kb | Adobe PDF | 見る/開く |
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