发明名称 |
Speech processing method and apparatus, and recording medium |
摘要 |
<p>The invention intends to successively extract a proper speech zone from a speech inputted in such a fashion that noise is mixed in a speech to be recognized, and to remove noise from the detected speech zone. To this end, a noise position is estimated from an input waveform, a speech zone is detected from a speech inputted subsequently by using power information of a speech at the estimated noise position, and noise is removed from the speech in the detected speech zone by using spectrum information of the speech at the estimated noise position. Further, the estimated noise zone is updated as appropriate by using a result of comparison between the power information of the input speech and the power information of the speech in the estimated noise zone so that the noise position is always properly estimated. <IMAGE></p> |
申请公布号 |
EP0977176(A2) |
申请公布日期 |
2000.02.02 |
申请号 |
EP19990305952 |
申请日期 |
1999.07.27 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
NAKAGAWA, KENICHIRO;KOMORI, YASUHIRO;KOSAKA, TETSUO |
分类号 |
G10L15/20;G10L21/02;(IPC1-7):G10L15/20 |
主分类号 |
G10L15/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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