page d'accueil   sommaire  

Synthesis of disordered voices - Synthèse des troubles de la voix [Synthesis of disordered voices]

The objective is the development of a synthesiser that simulates disordered voices. The synthesiser comprises a nonlinear model of the evolving glottal area, an aerodynamic model of the glottis and models of the wave propagation in the vocal tract and trachea. The simulated disorders are vocal jitter and shimmer, vocal frequency and amplitude tremor, diplophonia, biphonation, random cycles, additive noise owing to turbulence as well as asthenia and strain. Medical applications of the synthesis of voice disorders are the discovery of the acoustic cues of disordered voice timbres, the training of speech therapy students in the rating of disordered voices and the testing as well as calibration of acoustic analysis methods for the functional assessment of voice. L'objectif du travail est le développement d'un synthétiseur vocal en vue de la simulation des troubles de la voix. Le synthétiseur comporte un modèle numérique de la source vocale et du conduit vocal. Les perturbations simulées sont les microperturbations de cycle-à-cycle des durées et amplitudes des cycles vocaux de parole, ainsi que le tremblement vocal. D'autre types de troubles simulés sont la diplophonie, la bi-phonation et les irrégularités des cycles vocaux dues aux vibrations aléatoires des plis vocaux, ainsi que le souffle et l'asthénie ou le forçage. Les applications médicales de la synthèse vocale sont les expériences perceptuelles cliniques, la formation des cliniciens débutant, le calibrage des algorithmes d'analyses des dispériodicités vocales ainsi que la synthèse des points d'ancrage perceptifs pour les jurys d'écoute. [The objective is the development of a synthesiser that simulates disordered voices. The synthesiser comprises a nonlinear model of the evolving glottal area, an aerodynamic model of the glottis and models of the wave propagation in the vocal tract and trachea. The simulated disorders are vocal jitter and shimmer, vocal frequency and amplitude tremor, diplophonia, biphonation, random cycles, additive noise owing to turbulence as well as asthenia and strain. Medical applications of the synthesis of voice disorders are the discovery of the acoustic cues of disordered voice timbres, the training of speech therapy students in the rating of disordered voices and the testing as well as calibration of acoustic analysis methods for the functional assessment of voice. ]



responsable


Jean SCHOENTGEN


équipe


Samia FRAJ Francis GRENEZ


disciplines et mots clés déclarés


Electromagnétisme - analyse du signal Ingénierie biomédicale Sciences de l'ingénieur

conduit vocal simulations numérique synthèse de la parole troubles de la voix