A copy synthesis method to pilot the Klatt synthesiser

Yves Laprie 1 Anne Bonneau 1
1 PAROLE - Analysis, perception and recognition of speech
INRIA Lorraine, LORIA - Laboratoire Lorrain de Recherche en Informatique et ses Applications
Abstract : This paper presents a copy synthesis method to controlling the Klatt synthesizer. Our method allows speech stimuli to be constructed very easily. We accepted the parallel branch of the Klatt synthesizer. After formants have been tracked, the amp litudes of the resonators are measured on a spectrum obtained by an algorithm derived from cepstral smoothing called ''true e nvelope''. This algorithm has the advantage of approximating harmonics very accurately. The analysis strategy of a speech sig nal is straightforward: the fundamental frequency is calculated so that voiced regions are known and the frication energy is set to the value of the spectral energy above 4000 Hz. Stimuli which have been created by means of this method have a timbre close to that of natural speech. This copy synthesis method is incorporated in our software for speech research called ``Sno rri''. Therefore, the user has at his disposal a versatile tool for creating stimuli in the context of the Klatt synthesizer
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Yves Laprie, Anne Bonneau. A copy synthesis method to pilot the Klatt synthesiser. International Conference on Speech and Language Processing, Sep 2002, Denver, USA, 4 p. ⟨inria-00107593⟩

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