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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
2006
发表期刊ADVANCES IN BIOMETRICS, PROCEEDINGS
卷号3832页码:531-538
文章类型Article
摘要In 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标题词Science & Technology ; Technology
关键词[WOS]ROBUST SPEECH RECOGNITION
收录类别ISTP ; SCI
语种英语
WOS研究方向Computer Science
WOS类目Computer Science, Artificial Intelligence ; Computer Science, Theory & Methods
WOS记录号WOS:000235768300071
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/9294
专题09年以前成果
作者单位Chinese Acad Sci, Inst Automat, Beijing, Peoples R China
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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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