ARTICLE
mariethoz:ieee-letters:2005/IDIAP
A Unified Framework for Score Normalization Techniques Applied to Text Independent Speaker Verification
MariĆ©thoz, Johnny
Bengio, Samy
EXTERNAL
http://publications.idiap.ch/attachments/papers/2005/mariethoz-ieee-letters-2005.pdf
PUBLIC
http://publications.idiap.ch/index.php/publications/showcite/mariethoz:rr04-62
Related documents
IEEE Signal Processing Letters, Volume 12
12
7
532-535
2005
July 2005
IDIAP-RR 04-62
The purpose of this paper is to unify several of the state-of-the-art score normalization techniques applied to text-independent speaker verification systems. We propose a new framework for this purpose. The two well-known Z- and T-normalization techniques can be easily interpreted in this framework as different ways to estimate score distributions. This is useful as it helps to understand the various assumptions behind these well-known score normalization techniques, and opens the door for yet more complex solutions. Finally, some experiments on the Switchboard database are performed in order to illustrate the validity of the new proposed framework.
REPORT
mariethoz:rr04-62/IDIAP
A Unified Framework for Score Normalization Techniques Applied to Text Independent Speaker Verification
MariĆ©thoz, Johnny
Bengio, Samy
EXTERNAL
http://publications.idiap.ch/attachments/reports/2004/mariethoz-idiap-rr-04-62.pdf
PUBLIC
Idiap-RR-62-2004
2004
IDIAP
Published in IEEE Signal Processing Letters, Volume 12
The purpose of this paper is to unify several of the state-of-the-art score normalization techniques applied to text-independent speaker verification systems. We propose a new framework for this purpose. The two well-known Z- and T-normalization techniques can be easily interpreted in this framework as different ways to estimate score distributions. This is useful as it helps to understand the various assumptions behind these well-known score normalization techniques, and opens the door for yet more complex solutions. Finally, some experiments on the Switchboard database are performed in order to illustrate the validity of the new proposed framework.