Man-machine dialog by voice is a specific verbal interaction involving subjects' adaptation and communication failures. Our experimental material gave us the opportunity to compare the prosodic effects of two different tasks : the numerous reiterations of the same speech act (at least 25) for experimental needs, and the reiteration of an utterance (same word sequence) when the machine failed to understand. The numerous repetitions of the same speech act through the experiment lead the speakers to lower the whole time of each subsequent utterance (increase of the rate of production). On the other hand, the reiteration of a given utterance by request of the machine does not effect the rate of production, whereas the speaking rate proper (referring to the duration of meaningful units only) shows a tendency for lowering. Fundamental frequency is found to vary in this latter case, but this variation is determined by the semantic reorganisation of the utterance.
Cite as: Romeas, P. (1991) Prosodic effects of reiteration in man-machine dialog by voice. Proc. ESCA Workshop on Phonetics and Phonology of Speaking Styles, paper 046
@inproceedings{romeas91_ppst,
author={Pascal Romeas},
title={{Prosodic effects of reiteration in man-machine dialog by voice}},
year=1991,
booktitle={Proc. ESCA Workshop on Phonetics and Phonology of Speaking Styles},
pages={paper 046}
}