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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/10119/9969
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| タイトル: | A study on the IMTF-based filtering for the modulation spectrum of reverberant speech |
| 著者: | Morita, Shota
Unoki, Masashi
Akagi, Masato |
| 発行日: | 2010-03-04 |
| 出版者: | 2010 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing |
| 誌名: | 2010 International Workshop on Nonlinear Circuits, Communication and Signal Processing (NCSP'10) |
| 開始ページ: | 265 |
| 終了ページ: | 268 |
| 抄録: | Many methods of speech dereverberation have been proposed to reduce the effects of reverberation. The IMTF (Inverse MTF)-based filtering on the power envelope does not needto measure the room impulse response (RIR), while the RIR has to be precisely measured before the dereverberation in the typical methods. However, improvement of restoration accuracy of the restored power envelope is saturated as thereverberation time increases. This is a remaining problem. This paper proposes IMTF-based filtering on the modulation spectrum to resolve the problem. The proposed method estimates the reverberation time on the modulation spectrum and then dereverberates the modulation spectrum of reverberant speech using the IMTF. Three simulations were carried out to evaluate the proposed method. Results showed that the proposedmethod can adequately restore the power envelope of a reverberant signal in comparison with the previous method. |
| Rights: | This material is posted here with permission of the Research Institute of Signal Processing Japan. Shota Morita, Masashi Unoki, and Masato Akagi, 2010 International Workshop on Nonlinear Circuits, Communication and Signal Processing (NCSP'10), 2010, pp.265-268. |
| URI: | http://hdl.handle.net/10119/9969 |
| 資料タイプ: | publisher |
| 出現コレクション: | b11-1. 会議発表論文・発表資料 (Conference Papers)
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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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| NCSP2010_074-Morita.pdf | | 86Kb | Adobe PDF | 見る/開く |
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