Speaker verification with cohort normalized scoring

Details Speaker verification with cohort normalized scoring Speaker verification with cohort normalized scoring

1996-04-26

1997-10-07

MacDonald, Allen R.

395 259, G10L 506

Patent

active

056757042

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.

REFERENCES:
patent: 4094493 (1978-06-01), Sakoe
patent: 4581755 (1986-04-01), Sakoe
patent: 4694493 (1987-09-01), Sakoe
patent: 4720863 (1988-01-01), Li et al.
patent: 4837830 (1989-06-01), Wrench et al.
patent: 4910782 (1990-03-01), Watari
patent: 4959855 (1990-09-01), Daudelin
patent: 4979206 (1990-12-01), Padden et al.
patent: 5091947 (1992-02-01), Ariyoshi et al.
patent: 5127043 (1992-06-01), Hunt et al.
L. R. Rabiner et al., "A Model-Based Connected-Digit Recognition System Using Either Hidden Markov Models or Templates," vol. 1 Computer Speech and Language, 167-97 (1986).
A. Higgins et al., "Speaker Verification Using Randomized Phrase Prompting," Digital Signal Processing, vol. 1, 89-106 (1991).
C-H. Lee et al., "A Frame-Synchronous Network Search Algorithm for Connected Word Recognition," IEEE Trans. on ASSP, vol. 37, 1649-1658, Nov. 1989.
A. E. Rosenberg, "Evaluation of an Automatic Speaker-Verification System Over Telephone Lines," vol. 55 Bell System Tech. Journal, 723-44, (Jul.-Aug. '76).
L. R. Rabiner et al., "A Segmental K-Means Training Procedure for Connected Word Recognition," AT&T Tech. J., vol. 65, No. 3, 21-31 (May-Jun. 1986).
C-H. Lee et al., "Acoustic modeling for large vocabulary speech recognition," Computer Speech and Language, vol. 4, 127-165 (1990).
M. J. Carey et al., "A Speaker Verification System Using Alpha-Nets," ICASSP'91 Toronto, 397-400 (1991).
J. M. Naik, "Speaker Verification: A Tutorial," IEEE Communications Magazine, 42-48 (Jan. 1990).
Brochure relating to the Sprint VOICECARD service, pp. 1-5, 1990.

Affiliated with

Also associated with

Rating

Speaker verification with cohort normalized scoring does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Speaker verification with cohort normalized scoring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speaker verification with cohort normalized scoring will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2364245