Natural-sounding speech synthesizers requires the information from a model quantitatively describing prosody. Fujisaki's model [1] has shown considerable accuracy on many languages [4] [6]. We propose a method for Fujisaki's model parameters estimation, i.e. an inversion methods, based on relative extremes of pitch contour and a gradient algorithm refinement procedure. Preliminary results show excellent performance of the proposed method in matching the pitch contours. Preliminary results of synthesis making use of obtained features are surely encouraging.
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