Robust estimation for rapid speaker adaptation using discounted likelihood techniques
- Asela Gunawardana ,
- William Byrne
International Conference on Acoustics, Speech, and Signal Processing |
Published by Institute of Electrical and Electronics Engineers, Inc.
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 MLLR 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.
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