Papers

Adaptation of HMM dynamic parameters in reverberant environment

International Conference
2011~2015
작성자
한혜원
작성일
2013-09-01 00:36
조회
2523
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 367
70 International Conference Ho Seon Shin, Hong-Goo Kang "Bone-Conduction Speech Enhancement using a Speaker-Independent Filter" in ICEIC, 2014
69 International Conference Soonho Baek, Hong-Goo Kang "Vector Taylor Series based HMM Adaptation for Generalized Cepstrum in Noisy Environment" in ASRU, 2013
68 International Conference Jung-Won Lee, Hong-Goo Kang, Samuel Kim, Yoonjae Lee "Detecting pathological speech using local and global characteristics of harmonic-to-noise ratio" in APSIPA, 2013
67 International Conference Eunwoo Song, Jongyoub Ryu, Hong-Goo Kang "Speech enhancement for pathological voice using time-frequency trajectory excitation modeling" in APSIPA, 2013
66 International Conference Jinkyu Lee, Hyunson Seo, Hong-Goo Kang "Adaptation of HMM dynamic parameters in reverberant environment" in EUSIPCO, 2013
65 International Conference Jae-Mo Yang, Hong-Goo Kang "Adaptive multichannel linear prediction based dereverberation in time-varying room environments" in EUSIPCO, 2013
64 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
63 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
62 International Conference Taegyu Lee, Seokjin Lee, Young-cheol Park, Dae Hee Youn "Virtual bass system based on a multiband harmonic generation" in ICCE, 2013
61 International Conference Se-Woon Jeon, Dae Hee Youn, Young-Cheol Park "Blind depth estimation based on primary-to-ambient energy ratio for 3-D acoustic depth rendering" in APSIPA ASC, 2012