Welcome to the Ouisper project website

What is the Ouisper project ?

>There has been interest recently in the idea of a sensor-based system allowing speech communication via standard articulators, but without glottal activity ; that is, a silent speech interface.

>Two distinct types of application can be envisioned :

>an alternative to tracheo-oesophagal speech (TES) for persons having undergone a tracheotomy - a prosthesis for patients who have lost the use of their vocal chords.

>a "silent telephone" for use in situations where quiet must be maintained, or for communication in very noisy environments.

>The Ouisper project proposes to build a device for production of intelligible speech, from ultrasound and optical imagery of the tongue and lips - without activation of the vocal chords.




Ecole Supérieure de Physique et de Chimie Industrielles de la Ville de Paris

Laboratoire d'Electronique


Télécom Paris

Laboratoire de Traitement et Communication de l'Information

Vocal Track Visualization Lab

Vocal Tract Visualization Lab

University of Maryland

Université Pierre et Marie Curie - Paris

Université Pierre et Marie Curie - Paris VI




Agence Nationale de la Recherche
Délégation Générale pour l'Armement


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Post-Doctoral Position Available

Study of ultrasound and optical vocal tract data acquistion and 3-D modeling techniques for a real time speech synthesis application.

Position description


OUISPER is powered by a Terason T3000 portable ultrasound machine from Aloka France

Terason T3000