Rigid Head Motion in Expressive Speech Animation: Analysis and Synthesis.

Carlos Busso Zhigang Deng Michael Grimm Ulrich Neumann Shrikanth Narayanan Rigid Head Motion in Expressive Speech Animation: Analysis and Synthesis. 1075-1086 2007 15 IEEE Transactions on Audio, Speech & Language Processing 3 http://dx.doi.org/10.1109/TASL.2006.885910 db/journals/taslp/taslp15.html#BussoDGNN07