发明申请
- 专利标题： METHOD OF SEPARATING SOUND SIGNAL
- 专利标题（中）： 分离声信号的方法
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申请号： US12920299申请日： 2008-08-27
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公开(公告)号： US20110058685A1公开(公告)日： 2011-03-10
- 发明人: Shigeki Sagayama , Nobutaka Ono , Hirokazu Kameoka , Kenichi Miyamoto , Jonathan Le Roux
- 申请人： Shigeki Sagayama , Nobutaka Ono , Hirokazu Kameoka , Kenichi Miyamoto , Jonathan Le Roux
- 申请人地址： JP Tokyo
- 专利权人： THE UNIVERSITY OF TOKYO
- 当前专利权人： THE UNIVERSITY OF TOKYO
- 当前专利权人地址： JP Tokyo
- 优先权： JP2008-054826 20080305
- 国际申请： PCT/JP2008/065287 WO 20080827
- 主分类号： H03G5/00
- IPC分类号： H03G5/00
摘要：
The present invention obtains a separated signal from an audio signal based on the anisotropy of smoothness of spectral elements in the time-frequency domain. A spectrogram of the audio signal is assumed to be a sum of a plurality of sub-spectrograms, and smoothness of spectral elements of each sub-spectrogram in the time-frequency domain has directionality on the time-frequency plane. The method comprises obtaining a distribution coefficient for distributing spectral elements of said audio signal in the time-frequency domain to at least one sub-spectrogram based on the directionality of the smoothness of each sub-spectrogram on the time-frequency plane, and separating at least one sub-spectrogram from said spectral elements of said audio signal using said distribution coefficient.
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