Robust methods of updating model and a priori threshold in speaker verification
Robust methods of updating model and a priori threshold in speaker verification
复制标题
说话人验证中模型更新和先验阈值的鲁棒方法
DOI:
10.1109/icassp.1996.540299
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发表时间:
1996
期刊:
影响因子:
--
通讯作者:
S. Furui
中科院分区:
文献类型:
--
作者:
T. Matsui;Takashi Nishitani;S. Furui
We describe a method of updating a hidden Markov model (HMM) for speaker verification using a small amount of new data for each speaker. The HMM is updated by adapting the model parameters to the new data by maximum a posteriori (MAP) estimation. The initial values of the a priori parameters in MAP estimation are set using training speech used for first creating a speaker HMM. We also present a method of resetting the a priori threshold as the updating of the model proceeds. Evaluation of the performance of the two methods using 10 male speakers showed that the verification error rate was about 42% of that without updating.
DOI:
10.2307/2987329
发表时间:
1970-06
期刊:
--
影响因子:
--
作者:
M. Degroot
通讯作者:
M. Degroot