Papers

Adaptation of HMM dynamic parameters in reverberant environment

International Conference
2011~2015
작성자
한혜원
작성일
2013-09-01 00:36
조회
1266
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 355
42 International Conference Jae-Mo Yang, Hong-Goo Kang "Adaptive multichannel linear prediction based dereverberation in time-varying room environments" in EUSIPCO, 2013
41 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
40 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
39 Domestic Conference 이태규, 백용현, 박영철, 윤대희 "스테레오-멀티채널 업믹스 시스템에서의 초기 반사음 생성 기법" in 한국방송공학회, 2013
38 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
37 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
36 International Journal Jung-In Lee, Jeung-Yoon Choi, Hong-Goo Kang "Refinement of Landmark Detection and Extraction of Articulator-Free Features for Knowledge-Based Speech Recognition" in IEICE Transactions on Information and Systems, vol.E96-D, No.3, pp.746-749, 2013
35 Domestic Journal 현동일, 박영철, 윤대희 "가상 음원 이미징을 위한 향상된 진폭 패닝 기법" in 전자공학회논문지, vol.50, 제 3호, pp.139-145, 2013
34 International Conference Taegyu Lee, Seokjin Lee, Young-cheol Park, Dae Hee Youn "Virtual bass system based on a multiband harmonic generation" in ICCE, 2013
33 International Journal Chi-Sang Jung, Young-Sun Joo, Hong-Goo Kang "Waveform Interpolation-Based Speech Analysis/Synthesis for HMM-Based TTS Systems" in IEEE Signal Processing Letters, vol.19, issue 12, pp.809-812, 2012