Title :
Application of sequential estimation to time-varying environment compensation [in speech recognition]
Author :
Kim, Nam Soo ; Kim, Dong Kook ; Kim, Sang Ryong
Author_Institution :
Human & Comput. Interaction Lab., Samsung Adv. Inst. of Technol., Suwon, South Korea
Abstract :
Sequential approaches are proposed to compensate for the effects of a nonstationary environment. Unlike batch approaches, the proposed methods derive a different parameter estimate each time using the sequential expectation maximization (EM) algorithm. Moreover, we also propose a forward-backward estimation scheme as an improvement of the sequential parameter estimation
Keywords :
speech recognition; forward-backward estimation scheme; nonstationary environment; sequential expectation maximization algorithm; sequential parameter estimation; speech recognition; time-varying environment compensation; Application software; Contamination; Ear; Gaussian distribution; Humans; Noise robustness; Parameter estimation; Performance evaluation; Speech recognition; Working environment noise;
Conference_Titel :
Automatic Speech Recognition and Understanding, 1997. Proceedings., 1997 IEEE Workshop on
Conference_Location :
Santa Barbara, CA
Print_ISBN :
0-7803-3698-4
DOI :
10.1109/ASRU.1997.659115
