Summary
|
For Full-Text PDF, please login, if you are a member of IEICE, or go to Pay Per View on menu list, if you are a nonmember of IEICE. |
|
Approximate Decision Function and Optimization for GMM-UBM Based Speaker Verification Xiang XIAO Xiang ZHANG Haipeng WANG Hongbin SUO Qingwei ZHAO Yonghong YAN Publication IEICE TRANSACTIONS on Information and Systems Vol.E92-D No.9 pp.1798-1802 Publication Date: 2009/09/01 Online ISSN: 1745-1361 DOI: 10.1587/transinf.E92.D.1798 Print ISSN: 0916-8532 Type of Manuscript: LETTER Category: Speech and Hearing Keyword: automatic speaker verification, contribution weight re-estimation, optimization, Full Text: PDF(1.2MB)>>
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. | ||||||||||
| ||||||||||
