CA2105034A1 - Speaker Verification with Cohort Normalized Scoring - Google Patents

Speaker Verification with Cohort Normalized Scoring

Info

Publication number
CA2105034A1
CA2105034A1 CA2105034A CA2105034A CA2105034A1 CA 2105034 A1 CA2105034 A1 CA 2105034A1 CA 2105034 A CA2105034 A CA 2105034A CA 2105034 A CA2105034 A CA 2105034A CA 2105034 A1 CA2105034 A1 CA 2105034A1
Authority
CA
Canada
Prior art keywords
uttering
verification
normalized scoring
cohort
caller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2105034A
Other languages
French (fr)
Other versions
CA2105034C (en
Inventor
Biing-Hwang Juang
Chin-Hui Lee
Aaron Edward Rosenberg
Frank Kao-Ping Soong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of CA2105034A1 publication Critical patent/CA2105034A1/en
Application granted granted Critical
Publication of CA2105034C publication Critical patent/CA2105034C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L17/00—Speaker identification or verification
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L17/00—Speaker identification or verification
    • G10L17/06—Decision making techniques; Pattern matching strategies
    • G10L17/12—Score normalisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/38—Graded-service arrangements, i.e. some subscribers prevented from establishing certain connections
    • H04M3/382—Graded-service arrangements, i.e. some subscribers prevented from establishing certain connections using authorisation codes or passwords
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/42204—Arrangements at the exchange for service or number selection by voice
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L15/00—Speech recognition
    • G10L15/08—Speech classification or search
    • G10L15/14—Speech classification or search using statistical models, e.g. Hidden Markov Models [HMMs]
    • G10L15/142—Hidden Markov Models [HMMs]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/40—Electronic components, circuits, software, systems or apparatus used in telephone systems using speech recognition

Abstract

A facility is provided for allowing a caller to place a telephone call by merely uttering a label identifying a desired called destination and to charge the telephone call to a particular billing account by merely uttering a label identifying that account. Alternatively, the caller may place the call by dialing or uttering the telephone number of the called destination or by entering a speed dial code associated with that telephone number. The facility includes a speaker verification system which employs cohort normalized scoring. Cohort normalized scoring provides a dynamic threshold for the verification process making the process more robust to variation in training and verification utterences. Such variation may be caused by, e.g., changes in communication channel characteristics or speaker loudness level.
CA002105034A 1992-10-09 1993-08-27 Speaker verification with cohort normalized scoring Expired - Fee Related CA2105034C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US95930292A 1992-10-09 1992-10-09
US959,302 1992-10-09

Publications (2)

Publication Number Publication Date
CA2105034A1 true CA2105034A1 (en) 1994-04-10
CA2105034C CA2105034C (en) 1997-12-30

Family

ID=25501891

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002105034A Expired - Fee Related CA2105034C (en) 1992-10-09 1993-08-27 Speaker verification with cohort normalized scoring

Country Status (6)

Country Link
US (1) US5675704A (en)
EP (1) EP0592150B1 (en)
JP (1) JPH06242793A (en)
CA (1) CA2105034C (en)
DE (1) DE69324988T2 (en)
ES (1) ES2133365T3 (en)

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Also Published As

Publication number Publication date
EP0592150B1 (en) 1999-05-19
JPH06242793A (en) 1994-09-02
US5675704A (en) 1997-10-07
DE69324988T2 (en) 1999-09-30
EP0592150A1 (en) 1994-04-13
CA2105034C (en) 1997-12-30
ES2133365T3 (en) 1999-09-16
DE69324988D1 (en) 1999-06-24

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