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题名: an effective call system for strongly accented mandarin speech
作者: Jiang Tonghai ; Tang Ming ; Ge Fengpei ; Liu Changliang ; Dong Bin
会议文集: ICRCCS 2009 - 2009 International Conference on Research Challenges in Computer Science
会议名称: International Conference on Research Challenges in Computer Science
会议日期: DEC 28-29, 2009
出版日期: 2009
会议地点: Shanghai, PEOPLES R CHINA
出版者: 2009 INTERNATIONAL CONFERENCE ON RESEARCH CHALLENGES IN COMPUTER SCIENCE, ICRCCS 2009
出版地: 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA
ISBN: 978-0-7695-3927-0
部门归属: Jiang, Tonghai Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi, Peoples R China.
主办者: Int Comp Sci Soc, Intelligent Informat Technol Appl Res Assoc, Wuhan Univ Sci & Technol, S China Normal Univ
英文摘要: In this paper, we investigate some specific acoustic problems of the computer assisted language learning (CALL) system by modifying the acoustic model and feature under the speech recognition framework. At first, in order to alleviate the distortion of channel and speaker, speaker-dependent Cepstrum Mean Normalization (Speaker CMN) is adopted, by which the average correlation coefficient (ACC) between human and machine scores is improved from 78.00% to 84.14%. Then, Heteroscedastic Linear Discriminate Analysis (HLDA) is applied to enhance the discrimination ability of acoustic model, which successfully increases ACC from 84.14% to 84.62%. Additionally, HLDA can lessen the great human-machine scoring difference of speeches that have very good or too bad quality, and so leads to an increase of the correctly-rank rate from 85.59% to 90.99%. Finally, we use the technology of Maximum a Posteriori (MAP) to tune the acoustic model to match the strongly accented testing speech. As the result, ACC is improved from 84.62% to 86.57%.
语种: 英语
内容类型: 会议论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/2326
Appears in Collections:多语种信息技术研究室_会议论文

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Recommended Citation:
Jiang Tonghai;Tang Ming;Ge Fengpei;Liu Changliang;Dong Bin.an effective call system for strongly accented mandarin speech.见:2009 INTERNATIONAL CONFERENCE ON RESEARCH CHALLENGES IN COMPUTER SCIENCE, ICRCCS 2009.ICRCCS 2009 - 2009 International Conference on Research Challenges in Computer Science,10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA,2009,92-95
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文件名: An Effective CALL System for Strongly Accented Mandarin Speech.pdf
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