Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1991-10-23
1993-06-22
Shaw, Dale M.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 30, 381 36, 381 43, G10L 500, G10L 302, G10L 506
Patent
active
052221466
ABSTRACT:
A speech coding and speech recognition apparatus. The value of at least one feature of an utterance is measured over each of a series of successive time intervals to produce a series of feature vector signals. The closeness of the feature value of each feature vector signal to the parameter value of each of a set of prototype vector signals is determined to obtain prototype match scores for each vector signal and each prototype vector signal. For each feature vector signal, first-rank and second-rank scores are associated with the prototype vector signals having the best and second best prototype match scores, respectively. For each feature vector signal, at least the identification value and the rank score of the first-ranked and second-ranked prototype vector signals are output as a coded utterance representation signal of the feature vector signal, to produce a series of coded utterance representation signals. For each of a plurality of speech units, a probabilistic model has a plurality of model outputs, and output probabilities for each model output. Each model output comprises the identification value of a prototype vector and a rank score. For each speech unit, a match score comprises an estimate of the probability that the probabilistic model of the speech unit would output a series of model outputs matching a reference series comprising the identification value and rank score of at least one prototype vector from each coded utterance representation signal in the series of coded utterance representation signals.
REFERENCES:
patent: 4435617 (1984-03-01), Griggs
patent: 4587670 (1986-05-01), Levinson et al.
patent: 4624011 (1986-11-01), Watanabe et al.
patent: 4718094 (1988-01-01), Bahl et al.
patent: 4805207 (1989-02-01), McNutt et al.
patent: 4817156 (1989-03-01), Bahl et al.
patent: 4819271 (1989-04-01), Bahl et al.
patent: 4831653 (1989-05-01), Katayama
patent: 4837831 (1989-06-01), Gillick et al.
patent: 4918731 (1990-04-01), Muroi
patent: 4926488 (1990-05-01), Nadas et al.
patent: 4980918 (1990-12-01), Bahl et al.
patent: 5020107 (1991-05-01), Rohani et al.
patent: 5031217 (1991-07-01), Nishimura
patent: 5040213 (1991-08-01), Yasuda et al.
patent: 5046099 (1991-09-01), Nishimura
patent: 5058167 (1991-10-01), Kimura
patent: 5072452 (1991-12-01), Brown et al.
Bahl, L. R., et al. "Speaker-Independent Label Coding Apparatus." U.S. patent application Ser. No. 673,810, filed Mar. 22, 1991.
Bahl, L. R., et al. "Vector Quantization Procedure For Speech Recognition Systems Using Discrete Parameter Phoneme-Based Markov Word Models." IBM Technical Disclosure Bulletin, vol. 32, No. 7, Dec. 1989, pp. 320-321.
Jelinek, F. "Continuous Speech Recognition by Statistical Methods." Proceedings of the IEEE, vol. 64, No. 4, pp. 532-556, Apr. 1976.
Jelinek, F., et al. "Interpolated Estimation of Markov Source Parameters From Sparse Data." Pattern Recognition in Practice, pp. 381-402, 1980.
Bahl Latit R.
De Souza Peter V.
Gopalakrishnan Ponani S.
Picheny Michael A.
International Business Machines - Corporation
Schechter Marc D.
Shaw Dale M.
Tung Kee M.
LandOfFree
Speech recognition apparatus having a speech coder outputting ac does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Speech recognition apparatus having a speech coder outputting ac, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speech recognition apparatus having a speech coder outputting ac will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1445639