Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1986-03-27
1988-01-05
Kemeny, E. S.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
3645135, G10L 500
Patent
active
047180943
ABSTRACT:
Speech words are recognized by first recognizing each spectral vector identified by a label (feneme), then identifying the word by matching the string of labels against phones using simplified phone machines based on label and transition probabilities and Merkov chains. In one embodiment, a detailed acoustic match word score is combined with an approximate acoustic match word score to provide a total word score for a subject word. In another embodiment, a polling word score is combined with an acoustic match word score to provide a total word score for a subject word. The acoustic models employed in the acoustic matching may correspond, alternatively, to phonetic elements or to fenemes. Fenemes represent labels generated by an acoustic processor in response to a spoken input. Apparatus and method for determining word scores according to approximate acoustic matching and for determining word scores according to a polling methodology are disclosed.
REFERENCES:
patent: 3943295 (1976-03-01), Martin et al.
patent: 4038503 (1977-07-01), Moshier
patent: 4156868 (1979-05-01), Levinson
patent: 4158750 (1979-06-01), Sakoe et al.
patent: 4277644 (1981-07-01), Levinson
patent: 4319085 (1982-03-01), Welch et al.
patent: 4348553 (1982-09-01), Baker et al.
patent: 4400788 (1983-08-01), Myers et al.
patent: 4435617 (1984-03-01), Griggs
patent: 4467437 (1984-08-01), Tsuruta et al.
patent: 4481593 (1984-11-01), Bahler
patent: 4489434 (1984-12-01), Moshier
patent: 4489435 (1984-12-01), Moshier
patent: 4513436 (1985-04-01), Nose et al.
patent: 4516215 (1985-05-01), Hakaridani et al.
patent: 4559604 (1985-12-01), Ichikawa et al.
patent: 4587670 (1986-05-01), Levinson et al.
patent: 4593367 (1986-01-01), Slack et al.
patent: 4618983 (1986-10-01), Nishioka et al.
M. Cravero et al., "Phonetic Units for Hidden Markov Models", CSELT Technical Reports, vol., XIV, No. 2, Apr. 1986, pp. 121-125.
"Composite Fenemic Phones", Research Disclosure, Emsworth, Hampshire, GB., No. 256, Aug. 1985, pp. 418, Disclosed anonymously.
L. R. Rabiner et al., "Recognition of Isolated Digits using Hidden Markov Models with continuous Mixture Densities", AT&T Technical Journal, vol. 64, No. 6, Jul.-Aug. 1985, printed in U.S.A., pp. 1211-1234.
H. Bourlard et al., "Speaker Dependent Connected Speech Recognition via Phonemic Markov Models", Proceedings of IEEE, 1985, pp. 1213-1216.
D. B. Paul, "Training of HMM Recognizers by Simulated Anealing", Proceedings of IEEE, 1985, pp. 13-16.
B. H. Juang et al., "Recent Developments in the Application of Hidden Markov Models to Speaker-Independent Isolated Word Recognition", Proceedings of IEEE, 1985, pp. 9-12.
Y. Kamp, "State Reduction in Hidden Markov Chains Used for Speech Recognition" IEEE Transactions on Acoustics, Speech and Signal Processing, vol. ASSP-33, No. 4, Oct. 1985.
K. Sugawara et al., "Isolated Word Recognition Using Hidden Markov Models", Proceedings of IEEE, 1985, pp. 1-4.
R. Schwartz et al., "Context-Dependent Modeling for Acoustic-Phonetic Recognition of Continuous Speech", Proceedings of IEEE, 1985, pp. 1205-1208.
J. F. Mari et al., "Speaker Independent Connected Digit Recognition using _Hidden Markov Models", Speech Tech. 1985, pp. 127-132.
R. Schwartz et al., "Improved Hidden Markov Modeling of Phonemes for Continuous Speech Recognition", Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing, vol. 3 of 3, Mar. 19-21, 1984.
L. R. Bahl et al., "A Maximum Likelihood Approach to Continuous Speech Recognition", IEEE Transactions of Pattern Analysis and Machine Intelligence, vol., PAMI-5, No. 2, Mar. 1983.
F. Jelinek et al., "Design of a Linguistic Statistical Decoder for the Recognition of Continuous Speech", IEEE Transactions on Information Theory, vol., IT-21, No. 3, May 1975.
S. E. Levinson et al., "Speaker Independent Isolated Digit Recognition using Hidden Markov Models", Proceedings of IEEE, ICASSP 1983, Boston, pp. 1049-1052.
J. P. Haton, "Problems in the Design and Use of a Connected Speech Understanding System", Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing, vol. 3 of 3, May 1982.
D. M. Choy et al., "Speech Compression by Phoneme Recognition", IBM Technical Disclosure Bulletin, vol. 25, No. 6, Nov. 1982, pp. 2884-2886.
L. R. Bahl et al., "Interpolation of Estimators Derived from Sparse Data", IBM Technical Disclosure Bulletin, vol. 24, No. 4, Sept. 1981, pp. 2038-2051.
L. R. Bahl et al., "Faster Acoustic Match Computation", IBM Technical Disclosure Bulletin, vol. 23, No. 4, Sept. 1980, pp. 1718-1719.
S. K. Das et al., "System for Temporal Regisration of Quasi-Phonemic Utterance Representations", IBM Technical Disclosure Bulletin, vol. 23, No. 7A, Dec. 1980. pp. 3047-3050.
R. W. A. Scarr, "Word-Recognition Machine", Proceedings of IEE, vol. 117, No. 1, Jan. 1987, pp. 203-212.
Bahl Lalit R.
DeGennaro Steven V.
deSouza Peter V.
Mercer Robert L.
Block Marc A.
International Business Machines Corp.
Kemeny E. S.
LandOfFree
Speech recognition system 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 system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speech recognition system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-12688