Title :
Robust estimation for rapid speaker adaptation using discounted likelihood techniques
Author :
Gunawardana, Asela ; Byrne, William
Author_Institution :
Center for Language & Speech Procesing, Johns Hopkins Univ., Baltimore, MD, USA
Abstract :
The discounted likelihood procedure, which is a robust extension of the usual EM procedure, is presented, and two approximations which lead to two different variants of the usual maximum likelihood linear regression adaptation scheme are introduced. These schemes are shown to robustly estimate speaker adaptation transforms with very little data. The evaluation is carried out on the Switchboard corpus
Keywords :
interpolation; maximum likelihood estimation; speech recognition; transforms; EM procedure; MLLR adaptation scheme; Switchboard corpus; approximations; discounted likelihood techniques; maximum likelihood linear regression; rapid speaker adaptation; robust estimation; speaker adaptation transforms; Acoustic testing; Adaptation model; Approximation algorithms; Linear regression; Loudspeakers; Maximum likelihood linear regression; Natural languages; Robustness; Speech processing; System testing;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on
Conference_Location :
Istanbul
Print_ISBN :
0-7803-6293-4
DOI :
10.1109/ICASSP.2000.859127
