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Title: US5544277: Speech coding apparatus and method for generating acoustic feature vector component values by combining values of the same features for multiple time intervals
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Country: US United States of America

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10 pages

 
Inventor: Bakis, Raimo; Yorktown Heights, NY
Gopalakrishnan, Ponani S.; Yorktown Heights, NY
Kanevsky, Dimitri; Ossining, NY
Nadas, Arthur J.; Rock Tavern, NY
Nahamoo, David; White Plains, NY
Picheny, Michael A.; White Plains, NY
Sedivy, Jan; Hartsdale, NY

Assignee: International Business Machines Corporation, Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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Published / Filed: 1996-08-06 / 1993-07-28

Application Number: US1993000098682

IPC Code: Advanced: G06F 3/16; G10L 11/00; G10L 15/02; G10L 15/10; H03M 7/30; G10L 15/20;
IPC-7: G10L 9/00;

ECLA Code: G10L15/02; S10L15/20; T05K999/99;

U.S. Class: Current: 704/211; 704/222; 704/E15.004;
Original: 395/002.2; 395/002.31;

Field of Search: 381/041-45,36 395/002-2.31,2.39,2.4,2.52-2.54,2.59,2.64-2.66

Priority Number:
1993-07-28  US1993000098682

Abstract:     A speech coding apparatus and method measures the values of at least first and second different features of an utterance during each of a series of successive time intervals. For each time interval, a feature vector signal has a first component value equal to a first weighted combination of the values of only one feature of the utterance for at least two time intervals. The feature vector signal has a second component value equal to a second weighted combination, different from the first weighted combination, of the values of only one feature of the utterance for at least two time intervals. The resulting feature vector signals for a series of successive time intervals form a coded representation of the utterance. In one embodiment, a first weighted mixture signal has a value equal to a first weighted mixture of the values of the features of the utterance during a single time interval. A second weighted mixture signal has a value equal to a second weighted mixture, different from the first weighted mixture, of the values of the features of the utterance during a single time interval. The first component value of each feature vector signal is equal to a first weighted combination of the values of only the first weighted mixture signals for at least two time intervals, and the second component value of each feature vector signal is equal to a second weighted combination, different from the first weighted combination, of the values of only the second weighted mixture for at least two time intervals.

Attorney, Agent or Firm: Schechter, Marc D. ; Tassinari, Jr., Robert P. ;

Primary / Asst. Examiners: MacDonald, Allen R.; Doerrler, Michelle

Maintenance Status: E2 Expired  Check current status

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First Claim:
Show all 23 claims
We claim:     1. A speech coding apparatus comprising:
  • means for measuring the values of at least first and second different features of an utterance during each of a series of successive time intervals; and
  • means for generating a feature vector signal for each time interval, each feature vector signal having a first component value equal to a first weighted combination of the values of only one feature of the utterance for at least two time intervals, each feature vector signal having a second component value equal to a second weighted combination, different from the first weighted combination, of the values of only one feature of the utterance for at least two time intervals, said feature vector signals forming a coded representation of the utterance.


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Forward References: Show 7 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (7)   |   Backward references (6)   |   Citation Link

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PDF
Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 45pp US4980918  1990-12 Bahl et al.  International Business Machines Corporation Speech recognition system with efficient storage and rapid assembly of phonological graphs
Get PDF - 13pp US5031217  1991-07 Nishimura  International Business Machines Corporation Speech recognition system using Markov models having independent label output sets
Get PDF - 27pp US5182773  1993-01 Bahl et al.  International Business Machines Corporation Speaker-independent label coding apparatus
Get PDF - 10pp US5276766  1994-01 Bahl et al.  International Business Machines Corporation Fast algorithm for deriving acoustic prototypes for automatic speech recognition
Get PDF - 13pp US5278942  1994-01 Bahl et al.  International Business Machines Corporation Speech coding apparatus having speaker dependent prototypes generated from nonuser reference data
Get PDF - 13pp US5280562  1994-01 Bahl et al.  International Business Machines Corporation Speech coding apparatus with single-dimension acoustic prototypes for a speech recognizer
       
Foreign References: None

Other Abstract Info: DERABS G96-303468

Other References:
  • 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, Apr. 1976, pp. 532-556. (25 pages) Cited by 30 patents


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