|
JAIST Repository >
b. 情報科学研究科・情報科学系 >
b10. 学術雑誌論文等 >
b10-1. 雑誌掲載論文 >
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/10119/9519
|
| タイトル: | A Study on the IMTF-Based Filtering on the Modulation Spectrum of Reverberant Signal |
| 著者: | Morita, Shota
Unoki, Masashi
Akagi, Masato |
| キーワード: | MTF |
| 発行日: | 2010-07 |
| 出版者: | Research Institute of Signal Processing Japan |
| 誌名: | Journal of Signal Processing |
| 巻: | 14 |
| 号: | 4 |
| 開始ページ: | 269 |
| 終了ページ: | 272 |
| 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 need to measure the room impulse response (RIR)、 but the RIR has to be precisely measured before the dereverberation in typical methods. However、 improvement of the restoration accuracy of the restored power envelope is saturated as the reverberation 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 signal using the IMTF. Three simulations were carried out to evaluate the proposed method. The results showed that the proposed method could adequately restorethe power envelope of a reverberant signal in comparison with the previous method. |
| Rights: | Copyright (C) 2010 Research Institute of Signal Processing Japan. Shota Morita, Masashi Unoki, and Masato Akagi, Journal of Signal Processing, 14(4), 2010, 269-272. |
| URI: | http://hdl.handle.net/10119/9519 |
| 資料タイプ: | author |
| 出現コレクション: | b10-1. 雑誌掲載論文 (Journal Articles)
|
このアイテムのファイル:
| ファイル |
記述 |
サイズ | 形式 |
|---|
| 15955-1.pdf | | 83Kb | Adobe PDF | 見る/開く |
|
当システムに保管されているアイテムはすべて著作権により保護されています。
|
