发明公开
EP2144233A2 Noise supression estimation device and noise supression device
审中-公开
RauschunterdrückungsschätzungsvorrichtungundRauschunterdrückungsvorrichtung
- 专利标题： Noise supression estimation device and noise supression device
- 专利标题（中）： RauschunterdrückungsschätzungsvorrichtungundRauschunterdrückungsvorrichtung
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申请号： EP09164896.4申请日： 2009-07-08
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公开(公告)号： EP2144233A2公开(公告)日： 2010-01-13
- 发明人: Saruwatari, Hiroshi , Uemura, Yoshihisa , Kondo, Kazunobu
- 申请人： Yamaha Corporation , Nara Institute of Science and Technology National University Co
- 申请人地址： 10-1, Nakazawa-cho Naka-ku Hamamatsu-shi, Shizuoka 430-8650 JP
- 专利权人： Yamaha Corporation,Nara Institute of Science and Technology National University Co
- 当前专利权人： Yamaha Corporation,Nara Institute of Science and Technology National University Co
- 当前专利权人地址： 10-1, Nakazawa-cho Naka-ku Hamamatsu-shi, Shizuoka 430-8650 JP
- 代理机构： Kehl, Günther
- 优先权： JP2008179443 20080709; JP2008179444 20080709
- 主分类号： G10L21/02
- IPC分类号： G10L21/02
摘要：
A noise suppression estimation device calculates a noise index value which varies according to kurtosis of a frequence distribution of magnitude of a sound signal before or after suppression of the noise component, the noise index value indicating a degree of occurrence of musical noise after suppression of the noise component in a frequency domain. For example, the noise suppression estimation device calculates first kurtosis of a frequence distribution of magnitude of the sound signal before suppression of the noise component, calculates second kurtosis of a frequence distribution of magnitude of the sound signal after suppression of the noise component, and calculates the noise index value from the first kurtosis and the second kurtosis.
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