Speech recognition using multiple recognizers (selectively) appl

Details Speech recognition using multiple recognizers (selectively) appl Speech recognition using multiple recognizers (selectively) appl

1997-01-30

2000-09-19

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

704252, G10L 1526

Patent

active

061226130

ABSTRACT:
A speech sample is recognized with a computer system by processing the speech sample with at least two speech recognizers, each of which has a different performance characteristic. One speech recognizer may be a large-vocabulary, continuous speech recognizer optimized for real-time responsiveness and another speech recognizer may be an offline recognizer optimized for high accuracy. The speech content of the sample is recognized based on processing results from the speech recognizers. The speaker is provided with a real-time, yet potentially error-laden, text display corresponding to the speech sample while, subsequently, a human transcriptionist may use recognition results from multiple recognizers to produce an essentially error-free transcription. The performance characteristics of the recognizers may be based on style or subject matter, and the recognizers may operate serially or in parallel. Sets of candidates produced by the two recognizers may be combined by merging the scores to generate a combined set of candidates that corresponds to the union of the two sets. Offline processing may be performed based on input from a human operator, cost, processing times, confidence levels, or importance. Uncertainty for a candidate may occur when a difference between a score for a best scoring candidate and a score for a second best scoring candidate is less than a threshold value. A graphic user interface may allow the user to selectively transmit the speech sample to an other speech recognizer (or restrict such transmission), based on document type or availability of the second speech recognizer.

REFERENCES:
patent: 4060694 (1977-11-01), Suzuki et al.
patent: 4430726 (1984-02-01), Kasday
patent: 4481593 (1984-11-01), Bahler
patent: 4489435 (1984-12-01), Moshier
patent: 4720864 (1988-01-01), Tajima et al.
patent: 4783803 (1988-11-01), Baker et al.
patent: 4803729 (1989-02-01), Baker
patent: 4805218 (1989-02-01), Bamberg et al.
patent: 4805219 (1989-02-01), Baker et al.
patent: 4813076 (1989-03-01), Miller
patent: 4829576 (1989-05-01), Porter
patent: 4837831 (1989-06-01), Gillick et al.
patent: 4866778 (1989-09-01), Baker
patent: 4931950 (1990-06-01), Isle et al.
patent: 4991217 (1991-02-01), Garrett et al.
patent: 5027406 (1991-06-01), Roberts et al.
patent: 5036539 (1991-07-01), Wrench, Jr. et al.
patent: 5127055 (1992-06-01), Larkey et al.
patent: 5202952 (1993-04-01), Gillick et al.
patent: 5208897 (1993-05-01), Hutchins
patent: 5231670 (1993-07-01), Goldhor et al.
patent: 5280563 (1994-01-01), Ganong
patent: 5369704 (1994-11-01), Bennett et al.
patent: 5426745 (1995-06-01), Baji et al.
patent: 5428707 (1995-06-01), Gould et al.
patent: 5497373 (1996-03-01), Hulen et al.
patent: 5502774 (1996-03-01), Bellegarda et al.
patent: 5515475 (1996-05-01), Gupta et al.
patent: 5519808 (1996-05-01), Benton, Jr. et al.
patent: 5566272 (1996-10-01), Brems et al.
patent: 5666400 (1997-09-01), McAllister et al.
patent: 5677991 (1997-10-01), Hsu et al.
patent: 5754972 (1998-05-01), Baker et al.
patent: 5799273 (1998-08-01), Mitchell et al.
patent: 5857099 (1999-01-01), Mitchell et al.
IBM Technical Disclosure Bulletin, "Improved Correction of Speech Recognition Errors Through Audio Playback", vol. 36, No. 06A, Jun. 1993, 153-154.
Barry, Tim et al., "The Simultaneous Use of Three Machine Speech Recognition Systems to Increase Recognition Accuracy,"Proc. of the Nat'l Aerospace and Electronics Conf. NAEON 1994, vol. 2, pp. 667-671.
"Proofreading Aid for Speech Dictation Systems," IBM Technical Disclosure Bulletion, vol. 39, No. 1, (Jan. 1996), p. 149.
Rabiner, L.R., Levinson, S.E. and M.M. Sondhi. "On the application of vector quantization and hidden Markov models to speaker-independent, isolated word recognition", Bell System Technical Journal, vol. 62, No. 4, pt. 1, pp. 1075-1105, Apr. 1983.
Brown, M.K. and L.R. Rabiner. "On the use of energy in LPC-based recognition of isolated words", System Technical Journal, vol. 61, No. 10, pt. 1, pp. 2971-2987, Dec. 1982.
Alper, Alan. "IBM trumpets experimental speech recognition system", Computerworld, vol. 20, No. 16, p. 25 (2 pages), Apr. 21, 1986.

Affiliated with

Also associated with

Rating

Speech recognition using multiple recognizers (selectively) appl 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 using multiple recognizers (selectively) appl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speech recognition using multiple recognizers (selectively) appl will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1083162