On the state definition for a trainable excitation model in HMM-based speech synthesis. - Ranniery Maia; Tomoki Toda; Keiichi Tokuda; Shinichi Sakai; Shun Nakamura (ICASSP, 2008)

Admissible stopping in viterbi beam search for unit selection in concatenative speech synthesis. - Shinichi Sakai; Tatsuya Kawahara; Shun Nakamura (ICASSP, 2008)