Papers

Adaptation of HMM dynamic parameters in reverberant environment

International Conference
2011~2015
작성자
한혜원
작성일
2013-09-01 00:36
조회
217
Authors : Jinkyu Lee, Hyunson Seo, Hong-Goo Kang

Year : 2013

Publisher / Conference : EUSIPCO

This paper presents a new adaptation method for HMM-based automatic speech recognition system in a reverberant environment. Unlike the conventional approach that estimates dynamic mean vectors by adopting a spline interpolation technique, the proposed algorithm uses the transform derived by the mathematical property. Additionally, we introduce the adaptation for covariance matrices with the domain conversion process induced by log-normal distribution, because the statistical parameters are affected by not only mean vectors but also covariance matrices. Consequently, all statistical parameters in HMM can be adapted by the exact same transform structure. Experimental results show that the proposed method improves the recognition rate, in spite of having much simple adaptation process. Also it is robust to the estimation error that is unavoidable while extracting the reverberation time related parameters.
전체 326
216 International Conference Eunwoo Song, Jongyoub Ryu, Hong-Goo Kang "Speech enhancement for pathological voice using time-frequency trajectory excitation modeling" in APSIPA, 2013
215 Domestic Journal 이정인, 최정윤, 강홍구 "음성감정인식에서 음색 특성 및 영향 분석" in 방송공학회논문지, vol.18, 제 5호, pp.771-774, 2013
214 Domestic Journal 이정인, 강홍구 "음성감정인식에서의 톤 정보의 중요성 연구" in 방송공학회논문지, vol.18, 제 5호, pp.713-721, 2013
213 International Conference Jinkyu Lee, Hyunson Seo, Hong-Goo Kang "Adaptation of HMM dynamic parameters in reverberant environment" in EUSIPCO, 2013
212 International Conference Jae-Mo Yang, Hong-Goo Kang "Adaptive multichannel linear prediction based dereverberation in time-varying room environments" in EUSIPCO, 2013
211 Domestic Journal Jae-Mo Yang, Weige Chen, Z. Zhang, Hong-Goo Kang "반향 음성 신호의 하모닉 모델링을 이용한 음질 예측 알고리즘" in 방송공학회논문지, vol.18, issue.6, pp.919-926, 2013.11
210 International Conference JeeSok Lee, Frank Soong, Hong-Goo Kang "Source-Filter based Full-band Adaptive Harmonic Model and Its Application to Speech Prosody Modification" in INTERSPEECH, 2013
209 Domestic Conference 이태규, 백용현, 박영철, 윤대희 "스테레오-멀티채널 업믹스 시스템에서의 초기 반사음 생성 기법" in 한국방송공학회, 2013
208 International Journal Seong-woo Kim, Young-Cheol Park, Dae Hee Youn "A variable step-size gradient adaptive lattice algorithm for multiple sinusoidal interference cancelation" in EURASIP Journal on Advances in Signal Processing, vol.106, 2013
207 International Conference Young-Sun Joo, Chi-Sang Jung, Hong-Goo Kang "Enhancement of spectral clarity for HMM-based text-to-speech systems" in ICASSP, 2013