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Learning the Hidden Structure of Intonation: Implementing Various Functions of Prosody

By B. Holm and G. Bailly


This paper introduces a new model-constrained, data-driven method to generate prosody from metalinguistic information. We refer here to the general ability of intonation to demarcate speech units and convey information about the propositional and interactional functions of these units within the discourse. Our strong hypothesis are that (1) these functions are directly implemented as prototypical prosodic contours that are coextensive to the unit(s) they apply to, (2) the prosody of the message is obtained by superposing and adding all the contributing contours [2]. We describe here an analysis-bysynthesis scheme that consists in both identifying these prototypical contours and separating out their contributions in the prosodic contours of the training data. The scheme is applied to databases designed to evidence various functions of intonation. Experimental results show that the model generates faithful prosodic contours with very few prototypical movements. 1

Year: 2002
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