Speech recognition using clustered between word and/or phrase coarticulation
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United States of America Patent
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Oct 6, 1998
Grant Date -
N/A
app pub date -
Aug 31, 1994
filing date -
Aug 31, 1994
priority date (Note) -
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Abstract
Improved speech recognition is achieved according to the present invention by use of between word and/or between phrase coarticulation. The increase in the number of phonetic models required to model this additional vocabulary is reduced by clustering 19, 20 the inter-word/phrase models and grammar into only a few classes. By using one class for consonant inter-word context and two classes for vowel contexts, the accuracy for Japanese was almost as good as for unclustered models while the number of models was reduced more than half.
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