A Simple Hybrid Acoustic / Morphologically Constrained Technique for the Synthesis of Stop Consonants in Various Vocalic Contexts

Frédéric Berthommier (1) , Laurent Girin (2) , Louis-Jean Boë (1)

1 GIPSA-PCMD - GIPSA - Perception, Contrôle, Multimodalité et Dynamiques de la parole
2 GIPSA-MAGIC - GIPSA - Machines parlantes, Gestes oro-faciaux, Interaction Face-à-face, Communication augmentée

The predominant way to synthesize stop consonants is currently to use an articulatory model controlled by vocal tract parameters. We propose a new method to make this synthesis in various vocalic contexts. To generate the formant transitions, the basic principle is to apply an opening function on the (equal-length section) area function derived from the linear predictive (LP) model of speech signals. The definition of this opening function is empirically based on morphological considerations, and the main parameter is the place of articulation. Syllabic sounds with /b d g/ in /a i u/ vowel contexts are generated using LP synthesis with reflections coefficients corresponding to the interpolated area function. We show that the general structure of the formant transitions can be well represented using this model, and provide intelligible sound examples.

Mots clés: co-articulation; syllable synthesis; stop consonants; place of articulation; acoustic tube model; formant transitions; reflection coefficients

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Frédéric Berthommier, Laurent Girin, Louis-Jean Boë. A Simple Hybrid Acoustic / Morphologically Constrained Technique for the Synthesis of Stop Consonants in Various Vocalic Contexts. Interspeech 2012 - 13th Annual Conference of the International Speech Communication Association, Sep 2012, Portland, United States. pp.Thu.P10a.05. ⟨hal-00807519⟩