发明授权
- 专利标题： Speech recognition system including dimensionality reduction of baseband frequency signals
- 专利标题（中）： 语音识别系统，包括基带频率信号的降维
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申请号： US09694491申请日： 2000-10-24
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公开(公告)号： US06691090B1公开(公告)日： 2004-02-10
- 发明人: Kari Laurila , Jilei Tian
- 申请人： Kari Laurila , Jilei Tian
- 优先权： GB9925676 19991029
- 主分类号： G10L1502
- IPC分类号： G10L1502
摘要：
A method for use in a speech recognition system in which a speech waveform to be modelled is represented by a set of feature extracted parameters in the time domain, the method comprising dividing individual ones of one or more of said feature extracted parameters to provide for each divided feature extracted parameter a plurality of frequency channels, and demodulating at least one of the plurality of frequency channels to provide at least one corresponding baseband frequency signal.