Phoneme-to-viseme mappings: the good, the bad, and the ugly

In this paper we explore the issue of this choice of viseme-to-phoneme map. We show that there is definite difference in performance between viseme-to-phoneme mappings and explore why some maps appear to work better than others. We also devise a new algorithm for constructing phoneme-to-viseme mappings from labeled speech data. These new visemes, 'Bear' visemes, are shown to perform better than previously known units.