5th International Conference on Spoken Language Processing
The amusement expression is both visual and audible in speech. After recording comparable spontaneous, acted, mechanical, reiterated and seduction stimuli, five perceptual experiments were held, mainly based on the hypothesis of prosodically controlled effects of amusement on speech. Results show that audio is partially independent from video, which is as performant as audio-video. Spontaneous speech (involuntary controlled) can be identified in front of acted speech (voluntary controlled). Amusement speech can be distinguished from seduction speech.
Bibliographic reference. Schröder, Marc / Aubergé, Véronique / Cathiard, Marie-Agnes (1998): "Can we hear smile?", In ICSLP-1998, paper 0439.