Method and apparatus for preparing acoustic model and computer program for preparing acoustic model

摘要

Noise-superimposed speech data is grouped according to acoustic similarity, and sufficient statistics are prepared using the speech data in each of the groups. A group acoustically similar to voice data of a user of the speech recognition is selected, and sufficient statistics acoustically similar to the user's voice data are selected from the sufficient statistics in the selected group. Using the selected sufficient statistics, an acoustic model is prepared.