Labiodentalization of Korean bilabials

The present study examines the interaction of Korean bilabials in natural speech during neutral and smiling conditions to determine whether labiodentalization occurs and, if it does, how the body resolves the conflict between lip spreading and lip compression in smiled speech. Results from various Korean YouTube videos indicate that despite the absence of labiodental tokens in the Korean language inventory, bilabial stops are compromised in smiled speech in being realized as labiodental tokens.