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Title: US5875426: Recognizing speech having word liaisons by adding a phoneme to reference word models
[ Derwent Title ]

Country: US United States of America

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8 pages

Inventor: Bahl, Lalit Rai; Amawalk, NY
De Gennaro, Steven Vincent; Pawling, NY
deSouza, Peter Vincent; San Jose, CA
Epstein, Edward Adam; Putnam Valley, NY
Le Roux, Jean-Michel; Elmsford, NY
Lewis, Burn Lewin; Ossining, NY
Waast-Richard, Claire; Paris, France

Assignee: International Business Machines Corporation, Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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Published / Filed: 1999-02-23 / 1996-06-12

Application Number: US1996000662407

IPC Code: Advanced: G10L 15/08; G10L 15/18;
IPC-7: G10L 5/06;

ECLA Code: G10L15/08; G10L15/18; S10L15/187;

U.S. Class: Current: 704/255; 704/252; 704/E15.014; 704/E15.018;
Original: 704/255; 704/252;

Field of Search: 395/2.64,2.66,2.52,2.61,2.6,2.4,2.09,2.53,2.63,2.62

Priority Number:
1996-06-12  US1996000662407

Abstract:     A method and system of recognizing speech. The method and system perform a fast match on a word in the string of speech to be recognized which generates a fast match list representing words in a system vocabulary that most likely match a current word to be recognized. Next, the method and system perform a detailed match on the words in the fast match list and generate a detailed match list representing words that most likely match the current word to be recognized. Then for each word in the detailed match list that can accept a liaison phoneme from a preceding word, where each word is a liaison receptor, adding to the detailed match list a form of the liaison receptor, where the form represents an addition of a liaison phoneme to the liaison receptor, creating a modified detailed match list which is inclusive of the forms of the liaison receptors added to the detailed match list. Finally the method and system outputs a word in the modified detailed match list that has the highest probability of matching the word to be recognized.

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

Primary / Asst. Examiners: Hudspeth, David R.; Storm, Donald L.

Maintenance Status: E2 Expired  Check current status

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First Claim:
Show all 4 claims
We claim:     1. A method for recognizing speech, comprising:
  • inputting an utterance, said utterance includes at least one word in a system vocabulary; representing the utterance as a temporal sequence of frames, each frame representing acoustic parameters of the utterance at one of a succession of brief time periods;
  • generating a first match list of most probable matches between a sequence of one or more of the frames and words in the system vocabulary;
  • analyzing the first match to output a second match list, where the second match list establishes a ranking of the most probable matches between the sequence of one or more of the frames and words in the system vocabulary;
  • selecting each match in the second match list that can accept a liaison phoneme from an immediately preceding word, where the selected match in the second match list represents a current word;
  • determining whether the immediately preceding word can generate a liaison, wherein a liaison generator is a word that ends with an unpronounced consonant phoneme when followed by a word beginning with a consonant phoneme, and ends with a pronounced phoneme when followed by a word with a beginning selected from the group consisting of a vowel and a vowel-like phoneme;
  • amending the second match list by adding a word that represents a placement of the liaison phoneme at the beginning of the current word that creates a third match list;
  • selecting a word from the third match list having the highest ranking of the most probable match to the sequence of frames.

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Forward References: Show 8 U.S. patent(s) that reference this one

U.S. References: Go to Result Set: All U.S. references   |  Forward references (8)   |   Backward references (7)   |   Citation Link

Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 27pp US4349700  1982-09 Pirz et al.  Bell Telephone Laboratories, Incorporated Continuous speech recognition system
Get PDF - 13pp US4513435  1985-04 Sakoe et al.  Nippon Electric Co., Ltd. System operable as an automaton for recognizing continuously spoken words with reference to demi-word pair reference patterns
Get PDF - 79pp US4718094  1988-01 Bahl et al.  International Business Machines Corp. Speech recognition system
Get PDF - 50pp US4977599  1990-12 Bahl et al.  International Business Machines Corporation Speech recognition employing a set of Markov models that includes Markov models representing transitions to and from silence
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 - 31pp US5033087  1991-07 Bahl et al.  International Business Machines Corp. Method and apparatus for the automatic determination of phonological rules as for a continuous speech recognition system
Get PDF - 14pp US5325462  1994-06 Farrett  International Business Machines Corporation System and method for speech synthesis employing improved formant composition
Foreign References: None

Other Abstract Info: DERABS G1999-180303 DERABS G1999-180303 DERABS G2000-095859

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