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Combining continuous progressive model adaptation and factor analysis for speaker verification

McLaren, Mitchell L., Matrouf, Driss, Vogt, Robert J., & Bonastre, Jean-Francois (2008) Combining continuous progressive model adaptation and factor analysis for speaker verification. In Interspeech 2008, 22-26 September 2008, Brisbane, Australia.

Abstract

This paper proposes a novel technique of incorporating factor-analysis-based inter-session variability (ISV) modelling in speaker verification systems that employ continuous progressive speaker model adaptation. Continuous model adaptation involves the use of all encountered trials in the adaptation process through the assignment of confidence measures. The proposed approach incorporates these confidence measures in the general statistics used in the ISV modelling process. Progressive SVM-based classification was integrated into the system through the utilisation of GMM mean supervectors. The proposed system demonstrated a gain of 50% over baseline results when trialled on the NIST 2005 SRE corpus. Adaptative score normalisation techniques were found to be beneficial to both GMM and SVM configurations alleviating the detrimental effects of score shift in progressive systems.

Impact and interest:

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ID Code: 15489
Item Type: Conference Paper
Additional URLs:
Subjects: Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > ARTIFICIAL INTELLIGENCE AND IMAGE PROCESSING (080100) > Natural Language Processing (080107)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Institutes > Information Security Institute
Copyright Owner: Copyright 2008 International Speech Communication Association (ISCA)
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 06 Nov 2008
Last Modified: 29 Feb 2012 23:42

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