CUED Publications database

Factor analysis based VTS and JUD noise estimation and compensation

Flego, F and Gales, MJF (2011) Factor analysis based VTS and JUD noise estimation and compensation. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. pp. 4792-4795. ISSN 1520-6149

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Abstract

Model based compensation schemes are a powerful approach for noise robust speech recognition. Recently there have been a number of investigations into adaptive training, and estimating the noise models used for model adaptation. This paper examines the use of EM-based schemes for both canonical models and noise estimation, including discriminative adaptive training. One issue that arises when estimating the noise model is a mismatch between the noise estimation approximation and final model compensation scheme. This paper proposes FA-style compensation where this mismatch is eliminated, though at the expense of a sensitivity to the initial noise estimates. EM-based discriminative adaptive training is evaluated on in-car and Aurora4 tasks. FA-style compensation is then evaluated in an incremental mode on the in-car task. © 2011 IEEE.

Item Type: Article
Uncontrolled Keywords: adaptive training factor analysis noise robustness Speech recognition
Subjects: UNSPECIFIED
Divisions: Div F > Machine Intelligence
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:53
Last Modified: 27 Nov 2014 19:19
DOI: 10.1109/ICASSP.2011.5947427