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Communication Dans Un Congrès Année : 2024

Pinocchio, a biomimetic mechatronic testbed for producing in vitro articulated speech

Résumé

Speech production results from a fine neuro-controlled coordination between breathing, phonatory and articulatory movements. In physical terms, these movements induce fluid-structure-acoustic interactions within the vocal tract. In the framework of source-filter theory (Fant 1960), the aerodynamic phase of speech is often overlooked, yet being of much importance for voiced and unvoiced speech sound production (Catford 1977). In the case of voiced speech sound, it is taken into account by myoelastic-aerodynamic theory of phonation (Jan G. Švec et al. 2021), in which glottal constriction and vocal folds vibration generate aeroacoustic sources. Our aim is to advance our understanding of speech sound production by developing a biomimetic in vitro testbed. Over the last thirty years, vocal-fold testbeds have evolved in complexity and biomimicry. However, most testbeds explore the physics of phonation on geometrically-fixed replicas capable of self-sustained oscillations in fluid-structure interaction, but unable to produce intonative variations. Most of the time, the testbeds are not coupled to vocal tract, and whenever they are, the resonant cavities are static 3D-printed tracts. Reproducing in vitro the dynamic movement of speech articulators, such as jaw, tongue, velum and larynx, together with phonation, remains a challenge. We present here the first steps in the design of a biomimetic mechatronic testbed that would integrate all phonatory and articulatory aspects important for voice and speech production.
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Dates et versions

hal-04579018 , version 1 (17-05-2024)

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  • HAL Id : hal-04579018 , version 1

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Nathalie Henrich Bernardoni, Julien Royer, Mounib Tlaidi, Xavier Laval, Sylvain Arnaud, et al.. Pinocchio, a biomimetic mechatronic testbed for producing in vitro articulated speech. 13th International Seminar on Speech Production, May 2024, Autrans, France. ⟨hal-04579018⟩
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