发明名称 |
Speech recognition system, program and navigation system |
摘要 |
Voice of a user is inputted to a speech recognition section until a start of a no-voice domain from depression of a talk-switch. LPC cepstrum coefficients are calculated from the voice in an LPC analysis section and a cepstrum calculation section, and then temporarily stored in a parameter backward output section. A series of the LPC cepstrum coefficients is re-arranged to the series in which the time axis is inverted and then outputted to a collating section. The collating section calculates a degree of similarity between the LPC cepstrum coefficients and a recognition dictionary of a backward tree-structure stored in a standard pattern section through a backward collating.
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申请公布号 |
US7240008(B2) |
申请公布日期 |
2007.07.03 |
申请号 |
US20020232309 |
申请日期 |
2002.09.03 |
申请人 |
DENSO CORPORATION |
发明人 |
HITOTSUMATSU TAKAFUMI |
分类号 |
G09B29/00;G10L15/00;G01C21/00;G08G1/0969;G09B29/10;G10L11/00;G10L11/02;G10L15/04;G10L15/06;G10L15/08;G10L15/18;G10L15/22;G10L15/28 |
主分类号 |
G09B29/00 |
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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