Tree-structured noise-adapted HMM modeling for piecewise linear-transformation-based adaptation.

Zhipeng Zhang Kiyotaka Otsuji Sadaoki Furui Tree-structured noise-adapted HMM modeling for piecewise linear-transformation-based adaptation. 2003 INTERSPEECH https://doi.org/10.21437/Eurospeech.2003-292 conf/interspeech/2003 db/conf/interspeech/interspeech2003.html#ZhangOF03 669-672