Ing-Jr Ding
Improvement of MLLR Speaker Adaptation Using a Novel Method
2108 - 2113
2009
3
11
International Journal of Electrical and Computer Engineering
https://publications.waset.org/pdf/498
https://publications.waset.org/vol/35
World Academy of Science, Engineering and Technology
This paper presents a technical speaker adaptation
method called WMLLR, which is based on maximum likelihood linear
regression (MLLR). In MLLR, a linear regressionbased transform
which adapted the HMM mean vectors was calculated to maximize the
likelihood of adaptation data. In this paper, the prior knowledge of the
initial model is adequately incorporated into the adaptation. A series of
speaker adaptation experiments are carried out at a 30 famous city
names database to investigate the efficiency of the proposed method.
Experimental results show that the WMLLR method outperforms the
conventional MLLR method, especially when only few utterances
from a new speaker are available for adaptation.
Open Science Index 35, 2009