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Title: US6345254: Method and apparatus for improving speech command recognition accuracy using event-based constraints
[ Derwent Title ]


Country: US United States of America

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9 pages

 
Inventor: Lewis, James R.; Delray Beach, FL
Ortega, Kerry A.; Raleigh, NC
Van Buskirk, Ronald E.; Indiantown, FL
Wang, Huifang; Boynton Beach, FL
Nassiff, Amado; Boynton Beach, FL
Ballard, Barbara E.; Kansas City, MO

Assignee: International Business Machines Corp., Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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Published / Filed: 2002-02-05 / 1999-05-29

Application Number: US1999000321918

IPC Code: Advanced: G10L 15/22; G10L 15/18; G10L 15/26;
IPC-7: G10L 15/22;

ECLA Code: G10L15/22; S10L15/183;

U.S. Class: Current: 704/275; 704/255; 704/257; 704/E15.04;
Original: 704/275; 704/255; 704/257;

Field of Search: 704/270,200,272,275,231,239,240,250,255,256,257

Priority Number:
1999-05-29  US1999000321918

Abstract:     A method and system for improving the speech command recognition accuracy of a computer speech recognition system uses event-based constraints to recognize a spoken command. The constraints are system states and events, which include system activities, active applications, prior commands and an event queue. The method and system is performed by monitoring events and states of the computer system and receiving a processed command corresponding to the spoken command. The processed command is statistically analyzed in light of the system events and states as well as according to an acoustic model. The system then identifies a recognized command corresponding to the spoken command.

Attorney, Agent or Firm: Senterfitt, Akerman ;

Primary / Asst. Examiners: Dorvil, Richemond;

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Designated Country: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE 

Family: Show 9 known family members

First Claim:
Show all 11 claims
We claim:     1. In a computer system for speech recognition operating at various states and running a program to perform various events, a method for recognizing a spoken command, comprising the steps of:
  • monitoring at least one of said events and states;
  • receiving a processed command corresponding to said spoken command;
  • analyzing said processed command according to at least one acoustic model to identify a probable acoustic match;
  • analyzing said processed command to identify a probable context match using a statistical model to analyze at least one of said events and states; and
  • providing a recognized command based on said probable acoustic and statistical context matches.


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Forward References: Show 16 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (16)   |   Backward references (3)   |   Citation Link

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Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 48pp US5027406  1991-06 Roberts et al.  Dragon Systems, Inc. Method for interactive speech recognition and training
Get PDF - 13pp US5465317  1995-11 Epstein  International Business Machines Corporation Speech recognition system with improved rejection of words and sounds not in the system vocabulary
Get PDF - 27pp US5664061  1997-09 Andreshak et al.  International Business Machines Corporation Interactive computer system recognizing spoken commands
       
Foreign References: None

Other Abstract Info: DERABS G2001-466715

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