Speech recognition system, program and navigation system

Data processing: speech signal processing – linguistics – language – Speech signal processing – Application

Reexamination Certificate

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Details

C704S255000, C704S231000

Reexamination Certificate

active

10232309

ABSTRACT:
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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Office Action and its translation from Japanese Patent Office dated Sep. 20, 2005.
Notice for Reason for Rejection issued from Japanese Patent Office issued on Jan. 10, 2006 for the corresponding Japanese patent application No. JP-2001-307542 (a copy and English translation thereof).

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