Prosody of expressive speech : bringing to light some discursive situation influences
Résumé
We propose in this paper a computational view of e xpressive speech synthesis in the general framework of human-compute r interactions. We start by reviewing two essential aspects of a formal repr esentation for the expressive phenomena in speech: the prosodic vector P and the textual-extrinsic characteristics vector S. Then, we point out some influences of one of the S dimensions, ds (discursive situation), on the P prosodic realisation of the synthesized speech. We describe these influences by the O ds-P algebraic applications over three phonological levels and ill ustrate them by examples. We discuss some prosodic convergence and divergence sc enarios of the O ds-P application effect and the two other dimensions of S vector: O tg-P and O rp-P . We conclude by setting our work in an expressive-orien ted computing background.