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IEICE TRANSACTIONS on Information

Approximate Decision Function and Optimization for GMM-UBM Based Speaker Verification

Xiang XIAO, Xiang ZHANG, Haipeng WANG, Hongbin SUO, Qingwei ZHAO, Yonghong YAN

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Summary :

The GMM-UBM framework has been proved to be one of the most effective approaches to the automatic speaker verification (ASV) task in recent years. In this letter, we first propose an approximate decision function of traditional GMM-UBM, from which it is shown that the contribution to classification of each Gaussian component is equally important. However, research in speaker perception shows that a different speech sound unit defined by Gaussian component makes a different contribution to speaker verification. This motivates us to emphasize some sound units which have discriminability between speakers while de-emphasize the speech sound units which contain little information for speaker verification. Experiments on 2006 NIST SRE core task show that the proposed approach outperforms traditional GMM-UBM approach in classification accuracy.

Publication
IEICE TRANSACTIONS on Information Vol.E92-D No.9 pp.1798-1802
Publication Date
2009/09/01
Publicized
Online ISSN
1745-1361
DOI
10.1587/transinf.E92.D.1798
Type of Manuscript
LETTER
Category
Speech and Hearing

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