A PDF version of the presentation: [PDF]. The demonstration is presented below.

Signal transformation

Original sound

Modification of

• pitch: lower and higher
• vocal tract: timbre 1 and timbre 2
• voiced contents
• noise contents
• glottal source

Transformation of sex and age

• Examples of transformation of one author to 12 voices in the musical installation of Jean-Baptiste Barrière (May 2007)
• Examples of transformation of the male actor to a woman in the film "Les Amours d'Astrée et de Céladon" by E. Rohmer (January 2007)
• Transformation of monologue to dialogue (recorded and synthesized)

See also demo below.

Other voice transformations

• original
• breathy
• whispering
• creaky
• softer voice
• trembling
• dull and eager speech
• drunk

Examples of text-to-speech synthesis

• "C'est un soldat, à cheveux gris"
• "C'est un soldat à cheveux gris"
• "Mon chien..."
• Synthesized monologue transformed into dialog.

Preliminary examples of expressivity change

Based on training of statistical model and modification of synthesized sentence "Mon chien..."

• negative surprise
• extrovert sadness

Demonstration of voice transformation

© 2008. Characters by Cantoche and voices by Ircam.

The video above shows the effect of applying four different voice transformations (man, old woman, little girl, and young man) to a single voice and assigned each to a cartoon character.

play original: