Technique for effectively recognizing sequence of digits in voic

Details Technique for effectively recognizing sequence of digits in voic Technique for effectively recognizing sequence of digits in voic

1997-07-21

1999-11-30

Kuntz, Curtis A.

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

704257, 704242, 704244, G10L 500

Patent

active

059959266

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.

REFERENCES:
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patent: 5613037 (1997-03-01), Sukkar
patent: 5675707 (1997-10-01), Gorin et al.
L. Rabiner, "A Tutorial on Hidden Markov Models and Selected Applications in Speech Recognition," Proceedings of the IEEE, vol. 77, Feb. 1989, pp. 257-285.
H. Ney, "The Use of a One-Stage Dynamic Programming Algorithm for Connected Word Recognition," IEEE Trans. on Acoustic Speech and Signal Processing, vol. ASSP. 32, No. 2, Apr. 1984, pp. 263-271.

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