講演抄録/キーワード |
講演名 |
2009-01-30 11:00
Objective sound quality comparison based on higher-order statistics for nonlinear noise reduction methods ○Yoshihisa Uemura・Yu Takahashi・Hiroshi Saruwatari・Kiyohiro Shikano(NAIST)・Kazunobu Kondo(Yamaha) EA2008-127 |
抄録 |
(和) |
(まだ登録されていません) |
(英) |
In this paper, we reveal new findings about the generated musical noise in minimum mean-square error short-time spectral amplitude (MMSE STSA) processing. Recently we have proposed a objective metric of musical noise based on kurtosis change ratio on spectral subtraction (SS). Also we found an interesting relationship among the degree of generated musical noise, the shapes of signal's probability density function, the strength parameter of SS processing. This paper is aimed to automatically evaluate the sound quality of various types of noise reduction methods using kurtosis change ratio. We give a mathematical analysis based on higher-order statistics viewpoint, and lead to a valuable relation in that MMSE STSA has a weakness in speech period distortion rather than noise period, and vice versa in SS. |
キーワード |
(和) |
/ / / / / / / |
(英) |
Musical noise / higher-order statistics / minimum mean-square error short-time spectral amplitude / spectral subtraction / speech enhancement / / / |
文献情報 |
信学技報, vol. 108, no. 411, EA2008-127, pp. 67-72, 2009年1月. |
資料番号 |
EA2008-127 |
発行日 |
2009-01-22 (EA) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
EA2008-127 |