Audio/visual compensation for coarticulation

This study investigates how visual phonetic information affects compensation for coarticulation in speech perception. A series of CV syllables with fricative continuum from [s] to [sh] before [a],[u] and [y] was overlaid with a video of a face saying [s]V, [∫]V, or a visual blend of the two fricatives. We made separate movies for each vowel environment. We collected [s]/[∫] boundary locations from 24 native English speakers. In a test of audio-visual integration, [∫] videos showed significantly lower boundary locations (more [sh] responses) than [s] videos (t[23]=2.9, p 3, p