Glide landmark detection using band-limited energy ratio contours

作     者：Soojin Park Jeungyoon Choi Honggoo Kang 

作者机构：Dept.of Electrical and Electronic EngineeringYonsei University 

出 版 物：《Journal of Measurement Science and Instrumentation》 (测试科学与仪器（英文版）)

年 卷 期：2012年第3卷第4期

页      面：352-356页

学科分类：0711[理学-系统科学] 07[理学] 

基　　金：The Ministry of Knowledge Economy Korea under the Infor mation Technology Research Center support program supervised by the National IT Industry Promotion Agency(NIPA-2012-H0301-12-2006) 

主　　题：landmarks glide detection knowledge-based speech recognition 

摘      要：A detection system for American English glides/w y r 1] in a knowledge-based automatic speech recognition system is presented. The method uses detection of dips in band-limited energy to total energy ratios, instead of detecting dips along the unmodified band-limited energy contours. By using band-limited energy ratio, the dip detection is applicable in not only intervocalic regions but also in non-intervocalic regions. A Gaussian mixture model（GMM） based classifier is then used to separate the detected vowels and nasals. This approach is tested using the TIMIT corpus and results in an overall detection rate of 69.5 %, which is a 4.7 % absolute increase in detection rate compared with an hidden Markov model （HMM） based phone recognizer.