Apparatus and method for reducing speech recognition vocabulary

Details Apparatus and method for reducing speech recognition vocabulary Apparatus and method for reducing speech recognition vocabulary

1996-03-28

1999-05-18

Tsang, Fan S.

Telephonic communications

Audio message storage, retrieval, or synthesis

Voice activation or recognition

379 8819, 704275, H04M1/64

Patent

active

059057734

ABSTRACT:
A method of reducing the perplexity of a speech recognition vocabulary and dynamically selecting speech recognition acoustic model sets used in a simulated telephone operator apparatus. The directory of users of the telephone network is subdivided into subsets wherein each subset contains the names of users within a certain location or exchange. A speech recognition vocabulary database is compiled for each subset and the appropriate database is loaded into the speech recognition apparatus in response to a requested call to the location covered by the subset. Furthermore, a site-specific acoustic model set is dynamically loaded according to the location of a calling party. An apparatus for carrying out the method is also discussed.

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