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A comparative study of feature and score normalization for speaker verification
Zheng, R; Zhang, SW; Xu, B; Zhang, D; Jain, AK
Source PublicationADVANCES IN BIOMETRICS, PROCEEDINGS
2006
Volume3832Pages:531-538
SubtypeArticle
AbstractIn speaker verification, it is necessary to reduce the influence of different environmental conditions. In this paper, two stages of normalization techniques, feature normalization and score normalization, are examined for decreasing the mismatch between training and testing acoustic conditions. At the first stage, cepstral mean and variance normalization (CMVN) is modified to normalize the cepstral coefficients with the similar segmental parameter statistics. Next, due to score variability between verification trials, Test-dependent zero-score normalization (TZnorm) and Zero-dependent test-score normalization (ZTnorm) are comparatively presented to transform the output scores entirely and make the speaker-independent decision threshold more robust under adverse conditions. Experiments on NIST2002 SRE corpus show that the normalizations with CMVN in feature stage and ZTnorm in score stage achieved 20.3% relative reduction of EER and 18.1% relative reduction of the minimal DCF compared to the baseline system using CMN and zero normalization.
WOS HeadingsScience & Technology ; Technology
WOS KeywordROBUST SPEECH RECOGNITION
Indexed ByISTP ; SCI
Language英语
WOS Research AreaComputer Science
WOS SubjectComputer Science, Artificial Intelligence ; Computer Science, Theory & Methods
WOS IDWOS:000235768300071
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/9294
Collection09年以前成果
AffiliationChinese Acad Sci, Inst Automat, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Zheng, R,Zhang, SW,Xu, B,et al. A comparative study of feature and score normalization for speaker verification[J]. ADVANCES IN BIOMETRICS, PROCEEDINGS,2006,3832:531-538.
APA Zheng, R,Zhang, SW,Xu, B,Zhang, D,&Jain, AK.(2006).A comparative study of feature and score normalization for speaker verification.ADVANCES IN BIOMETRICS, PROCEEDINGS,3832,531-538.
MLA Zheng, R,et al."A comparative study of feature and score normalization for speaker verification".ADVANCES IN BIOMETRICS, PROCEEDINGS 3832(2006):531-538.
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