Speech recognition apparatus and speech recognition program

Details Speech recognition apparatus and speech recognition program Speech recognition apparatus and speech recognition program

2007-03-13

2010-10-19

Albertalli, Brian L (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S211000, C704S233000, C704S253000

Reexamination Certificate

active

07818171

ABSTRACT:
A speech recognition apparatus includes a storage medium for storing tree structured dictionary data containing words as nodes in a tree structure with a root and leaf nodes. An input speech is compared with a forward acoustic model corresponding to a speech resulting from chronologically reproducing words indicated by nodes for leaf nodes. A backward speech is further compared with a backward acoustic model. The backward speech is generated by reproducing the input speech in chronologically backward order. The backward acoustic model corresponds to a speech resulting from reproducing a word string toward the root in chronologically backward order. The comparison is performed in the backward order of a sequence starting from one of separator nodes. The speech recognition apparatus thereby outputs a word string that highly likely matches the input speech.

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Office Action dated Apr. 26, 2010 from the German Patent and Trademark Office in the corresponding patent application No. 10 2007 015 497.8-56 (English translation enclosed).

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