Fuzzy normalisation methods for speaker verification

This paper proposes normalisation methods based on fuzzy set theory for speaker veri cation. A claimed speaker's score used to accept or reject this speaker is viewed as a fuzzy membership function. We propose two scores: the fuzzy entropy and fuzzy C-means membership functions. Moreover, a likelihood transformation is considered to obtain a general approach and, based on this, ve more fuzzy scores are proposed. Finally, a noise clustering method is applied to the current and proposed methods, reducing the equal error rate in all cases. Experiments performed on the ANDOSL and YOHO speech corpora show better results for all proposed methods.

[1]  Seiichi Nakagawa,et al.  Text-independent speaker recognition using non-linear frame likelihood transformation , 1998, Speech Commun..

[2]  Biing-Hwang Juang,et al.  The use of cohort normalized scores for speaker verification , 1992, ICSLP.

[3]  Dat Tran,et al.  A proposed likelihood transformation for speaker verification , 2000, 2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.00CH37100).

[4]  Sadaoki Furui,et al.  Concatenated phoneme models for text-variable speaker recognition , 1993, 1993 IEEE International Conference on Acoustics, Speech, and Signal Processing.

[5]  D. Tran,et al.  Fuzzy entropy clustering , 2000, Ninth IEEE International Conference on Fuzzy Systems. FUZZ- IEEE 2000 (Cat. No.00CH37063).

[6]  Rajesh N. Davé,et al.  Characterization and detection of noise in clustering , 1991, Pattern Recognit. Lett..

[7]  Michael Wagner,et al.  Hybrid threshold approach in text-independent speaker verification , 1994, ICSLP.

[8]  Steve Young,et al.  The HTK book , 1995 .

[9]  P. Laguna,et al.  Signal Processing , 2002, Yearbook of Medical Informatics.

[10]  Dat Tran,et al.  A proposed decision rule for speaker recognition based on fuzzy c-means clustering , 1998, ICSLP.

[11]  J.B. Millar,et al.  The Australian National Database of Spoken Language , 1994, Proceedings of ICASSP '94. IEEE International Conference on Acoustics, Speech and Signal Processing.

[12]  Douglas A. Reynolds,et al.  Speaker identification and verification using Gaussian mixture speaker models , 1995, Speech Commun..