Weighted LDA techniques for I-vector based speaker verification

Kanagasundaram, Ahilan, Dean, David B., Vogt, Robert, Mclaren, Mitchell, Sridharan, Sridha, & Mason, Michael W. (2012) Weighted LDA techniques for I-vector based speaker verification. In 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, IEEE, Japan, pp. 4781-4784.

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This paper introduces the Weighted Linear Discriminant Analysis (WLDA) technique, based upon the weighted pairwise Fisher criterion, for the purposes of improving i-vector speaker verification in the presence of high intersession variability. By taking advantage of the speaker discriminative information that is available in the distances between pairs of speakers clustered in the development i-vector space, the WLDA technique is shown to provide an improvement in speaker verification performance over traditional Linear Discriminant Analysis (LDA) approaches. A similar approach is also taken to extend the recently developed Source Normalised LDA (SNLDA) into Weighted SNLDA (WSNLDA) which, similarly, shows an improvement in speaker verification performance in both matched and mismatched enrolment/verification conditions. Based upon the results presented within this paper using the NIST 2008 Speaker Recognition Evaluation dataset, we believe that both WLDA and WSNLDA are viable as replacement techniques to improve the performance of LDA and SNLDA-based i-vector speaker verification.

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10 citations in Scopus
9 citations in Web of Science®
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ID Code: 49877
Item Type: Conference Paper
Refereed: Yes
Keywords: speaker verification, i-vector, linear discriminant analysis
DOI: 10.1109/ICASSP.2012.6288988
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Signal Processing (090609)
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Past > Institutes > Information Security Institute
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 please contact the authors
Deposited On: 25 Apr 2012 23:59
Last Modified: 03 Jun 2015 17:50

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