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Title: US5802251: Method and system for reducing perplexity in speech recognition via caller identification
[ Derwent Title ]

Country: US United States of America

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9 pages

Inventor: Cohen, Paul S.; Yorktown Heights, NY
Lucassen, John M.; New York, NY
Sherwin, Jr., Elton B.; Stamford, CT
Vizcaino, Jorge L.; Parkland, FL

Assignee: International Business Machines Corporation, Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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Published / Filed: 1998-09-01 / 1995-09-05

Application Number: US1995000523755

IPC Code: Advanced: G10L 15/00; G10L 15/06; G10L 15/10; G10L 15/20; G10L 17/00; H04Q 7/38;
IPC-7: G10L 3/00;

ECLA Code: G10L15/065; G10L15/06; G10L15/20; G10L17/00;

U.S. Class: Current: 704/275; 704/231; 704/246; 704/270; 704/E15.007; 704/E15.013; 704/E15.039; 704/E17.001;
Original: 395/002.84; 395/002.79; 395/002.4; 395/002.55;

Field of Search: 379/038,67,88,96,189,199 381/041-43,45 395/002,2.1,2.4,2.5,2.6,2.55,2.62,2.79,2.84

Priority Number:
1995-09-05  US1995000523755
1993-12-30  US1993000175707

Abstract:     A method and system are disclosed for reducing perplexity in a speech recognition system within a telephonic network based upon determined caller identity. In a speech recognition system which processes input frames of speech against stored templates representing speech, a core library of speech templates is created and stored representing a basic vocabulary of speech. Multiple caller-specific libraries of speech templates are also created and stored, each library containing speech templates which represent a specialized vocabulary and pronunciations for a specific geographic location and a particular individual. Additionally, the caller-specific libraries of speech templates are preferably processed to reflect the reduced bandwidth, transmission channel variations and other signal variations introduced into the system via a telephonic network. The identification of a caller is determined upon connection to the network via standard caller identification circuitry and upon detection of a spoken utterance, that utterance is processed against the core library, if the caller's identity cannot be determined, or against a particular caller-specific library, if the caller's identity can be determined, thereby greatly enhancing the efficiency and accuracy of speech recognition by the system.

Attorney, Agent or Firm: Tomlin, Richard A. ; Dillon, Andrew J. ;

Primary / Asst. Examiners: Hafiz, Tariq R.;

Maintenance Status: E1 Expired  Check current status
CC Certificate of Correction issued

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Related Applications:
Application Number Filed Patent Pub. Date  Title
US1993000175707 1993-12-30       

Parent Case:     This is a continuation of application Ser. No. 08/175,707, filed 30 Dec., 1993 now abandoned.

Designated Country: DE FR GB 

Family: Show 3 known family members

First Claim:
Show all 4 claims
We claim:     1. A method for enhancing the accuracy and efficiency of a speech recognition system which processes input frames of speech against stored templates representing speech utilizing a telephonic network, said method comprising the steps of;
  • creating and storing a core library of speech templates;
  • creating and storing a plurality of caller-specific libraries of speech templates which each include a vocabulary and pronunciation reflective of a specific geographic location;
  • attempting to determine an identification of a caller location by utilizing a caller identification system within said telephonic network;
  • processing an input speech utterance against said core library of speech templates in the event an identification of said caller location within said telephone network is not determined; and
  • processing an input speech utterance against a particular one of said plurality of caller-specific libraries of speech templates in response to a determination of an identification of said caller location within said telephonic network.

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Description: Show description

Forward References: Show 89 U.S. patent(s) that reference this one

U.S. References: Go to Result Set: All U.S. references   |  Forward references (89)   |   Backward references (30)   |   Citation Link

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Get PDF - 7pp US5165095  1992-11 Borcherding  Texas Instruments Incorporated Voice telephone dialing
Get PDF - 25pp US5167011  1992-11 Priest  Morris; W. H. Method for coodinating information storage and retrieval
Get PDF - 11pp US5170426  1992-12 D'Alessio  Bell Atlantic Network Services, Inc. Method and system for home incarceration
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Get PDF - 7pp US5216720  1993-06 Naik et al.  Texas Instruments Incorporated Voice verification circuit for validating the identity of telephone calling card customers
Get PDF - 10pp US5222190  1993-06 Pawate et al.  Texas Instruments Incorporated Apparatus and method for identifying a speech pattern
Get PDF - 14pp US5233681  1993-08 Bahl et al.  International Business Machines Corporation Context-dependent speech recognizer using estimated next word context
Get PDF - 13pp US5303299  1994-04 Hunt et al.  VCS Industries, Inc. Method for continuous recognition of alphanumeric strings spoken over a telephone network
Get PDF - 12pp US5327486  1994-07 Wolff et al.  Bell Communications Research, Inc. Method and system for managing telecommunications such as telephone calls
Get PDF - 19pp US5353336  1994-10 Hou et al.  AT&T Bell Laboratories Voice directed communications system archetecture
Get PDF - 41pp US5502759  1996-03 Cheng et al.  Nynex Science & Technology, Inc. Apparatus and accompanying methods for preventing toll fraud through use of centralized caller voice verification
Get PDF - 32pp US5511111  1996-04 Serbetcioglu et al.  Engineering and Business Systems, Inc. Caller name and identification communication system with caller screening option
Foreign References: None

Other Abstract Info: DERABS G95-233559

Other References:
  • Jelinek, "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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