Robust speech recognition method based on discriminative environment feature extraction

	Robust speech recognition method based on discriminative environment feature extraction
	Han, JQ ; Gao, W
	2001-09-01
发表期刊	JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY
ISSN	1000-9000
卷号	16 期号:5 页码:458-464
摘要	It is an effective approach to learn the influence of environmental parameters, such as additive noise and channel distortions, from training data for robust speech recognition. Most of the previous methods are based on maximum likelihood estimation criterion. However, these methods do not lead to a minimum error rate result. In this paper, a novel discriminative learning method of environmental parameters, which is based on Minimum Classification Error (MCE) criterion, is proposed. In the method, a simple classifier and the Generalized Probabilistic Descent (GPD) algorithm are adopted to iteratively learn the environmental parameters. Consequently, the clean speech features are estimated from the noisy speech features with the estimated environmental parameters, and then the estimations of clean speech features are utilized in the back-end HMM classifier. Experiments show that the best error rate reduction of 32.1% is obtained, tested on a task of 18 isolated confusion Korean words, relative to a conventional HMM system.
关键词	robust speech recognition minimum classification error environmental parameter discriminative learning
收录类别	SCI
语种	英语
WOS研究方向	Computer Science
WOS类目	Computer Science, Hardware & Architecture ; Computer Science, Software Engineering
WOS记录号	WOS:000171323100008
出版者	SCIENCE PRESS
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/13376
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Han, JQ
作者单位	1.Harbin Inst Technol, Dept Comp Engn & Sci, Harbin 150001, Peoples R China 2.Chinese Acad Sci, Inst Comp Technol, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Han, JQ,Gao, W. Robust speech recognition method based on discriminative environment feature extraction[J]. JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,2001,16(5):458-464.
APA	Han, JQ,&Gao, W.(2001).Robust speech recognition method based on discriminative environment feature extraction.JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,16(5),458-464.
MLA	Han, JQ,et al."Robust speech recognition method based on discriminative environment feature extraction".JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY 16.5(2001):458-464.