A comparative study of feature and score normalization for speaker verification

CASIA OpenIR > 09年以前成果

	A comparative study of feature and score normalization for speaker verification
	Zheng, R; Zhang, SW; Xu, B; Zhang, D; Jain, AK
发表期刊	ADVANCES IN BIOMETRICS, PROCEEDINGS
	2006
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：10[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
推荐引用方式 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.