Aiming at communicative prosody control, fundamental frequency (F0) control characteristics of nonverbal utterance “n” were modeled. For the input to F0 control, a three-dimensional vector is employed to quantify its perceptual impressions, since MDS (Multi-Dimensional Scaling) analysis can efficiently reduce impression vector space dimension to three-dimensional as shown in our previous studies. For the output, F0 generation model parameters were employed to efficiently reduce control freedoms only by the magnitude of long-range control (phrase component) and short-range control (accent component) and their timing. From the analysis of nonverbal utterances using an F0 generation model, their control characteristics were well understood and directly linked to impression vectors. Based on the training of a non linear mapping from an impression vector to F0 generation model parameters, it was experimentally confirmed that F0 contours were generated directly from input impression vectors.
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