Method and system for limiting the number of words searched by a voice recognition system
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United States of America Patent
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May 26, 1998
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N/A
app pub date -
Jun 5, 1996
filing date -
Jun 5, 1996
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Abstract
A method and system for limiting the number of words searched by a voice recognition system having a predetermined language model containing a first plurality of words corresponding to all words recognizable by the voice recognition system in a predetermined application having at least one mode. The predetermined language model includes a list of all states that correspond to each of the first plurality of words. Based on the current mode of the application of the voice recognition system a subvocabulary of active words containing a second plurality of the first plurality of words is determined. A signal identifying the subvocabulary of active words is transferred to a recognizer which turns on only those states in the predetermined language model corresponding to the active words. Finally, a search is performed on a portion of the predetermined language model according to the subvocabulary of active words so that the computation time of the voice recognition system is reduced.
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