Technique for effectively recognizing sequence of digits in voice dialing
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United States of America Patent
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Nov 30, 1999
Grant Date -
N/A
app pub date -
Jul 21, 1997
filing date -
Jul 21, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a speech recognition system for performing voice dialing, an inventive connected digit recognizer is employed to recognize a sequence of spoken digits. The inventive recognizer generates the maximum-likelihood digit sequence corresponding to the spoken sequence in accordance with the Viterbi algorithm. However, unlike a prior art connected digit recognizer, the inventive recognizer does not assume that a digit model in a sequence can be followed by any digit model with equal probability. Rather, the inventive recognizer takes into account, for each digit model being decided on, a conditional probability that that digit model would follow a given digit model preceding thereto.
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