A preliminary study of audiovisual integration of roundedness in front vowels: limitation due to discrepancy in jaw depression

Abstract

Audiovisual integration of vowel roundedness was investigated, as the discrepancy in jaw depression increased. The results show that the relative visual impact on perceived roundedness decreases at larger discrepancies. The results may suggest that this tendency would be stronger among acoustically presented [i] than [y]. To verify this, more research with talking heads may be required. The results confirm earlier findings that audiovisual integration doesn’t require unconsciousness among subjects about the dubbing procedure.