The institute
FEMTO's news

You are here

Recognizing liars from the sound of their voice ?

Scientists have prouved that the intensity, speed and pitch of the speaker's voice automatically influences our perception of the reliability and honesty of his or her speech. This work is published in the prestigious journal "Nature Communications"

Faster speech rate, greater intensity in the middle of the word, and falling pitch at the end of the word: that is the prosody1 to adopt if one wants to come across as reliable and honest to one’s listeners. Scientists from the Science and Technology for Music and Sound laboratory (CNRS/Ircam/Sorbonne Université/Ministère de la Culture) have conducted a series of experiments2 to understand how we decide, based on the voice, whether a speaker is honest and confident, or on the contrary dishonest and uncertain. They have also shown that this signature was perceived similarly in a number of languages (French, English, Spanish), and that it is registered “automatically” by the brain: even when participants were not judging the speaker’s certainty or honesty, this characteristic sound impacted how they memorized the words. Prosody consequently conveys information on the truth-value or certainty of a proposition. Scientists are now trying to understand how speakers produce such prosody based on their intentions. This research was published on 8 February in Nature Communications.

Jean-Julien Aucouturier, co-author of this publication, now works at the FEMTO-ST laboratory (CNRS/Université de Bourgogne-Franche Comté/ENSMM/UTBM)

Notes :

1 Prosody refers to the “melody” of a phrase or word: its pitch, rate, and intensity.

2 Scientists used vocal signal processing techniques to create random pronunciations of words (rising pitch, falling pitch, etc.), and then asked multiple groups of participants whether these words were pronounced with certainty or honesty. The software they developed as part of this effort, CLEESE, is open source: https://forum.ircam.fr/projects/detail/cleese/

Bibliographie :

Listeners’ perceptions of the certainty and honesty of a speaker are associated with a common prosodic signature. Louise Goupil, Emmanuel Ponsot, Daniel Richardson, Gabriel Reyes, Jean-Julien Aucouturier. Nature communications, le 8 février 2021.
DOI : 10.1038/s41467-020-20649-4

 Contact :

FEMTO-ST :  Jean-Julien Aucouturier

 

 

  • Fu-Li Hsiao receives a Best Student Paper Award at IEEE Ultrasonics Symposium 2007

    Fu-Li Hsiao, a PhD candidate shared with the National Central university of Taipei, Taiwan, has received one of the Best Student Paper Awards at IEEE Ultrasonics Symposium 2007, held in New York from October 17-31, 2007. The title of his contribution was "Experimental Study of Complete Band Gaps and Waveguiding inside Phononic Crystal Slabs".

    Read more
  • International Symposium on Flow Visualization and Image Processing

    The International Symposium on Flow Visualization and Image Processing is coming back to France! It will take place in Nice from 1st to 4th July, 2008.

    Read more
  • Oliver Wright speaking on "Tracking surface phonons on phononic crystals", September 13, 2007

    Tracking surface phonons on phononic crystals

    Read more
  • Abdelkrim Khelif is the recipient of a CNRS 2007 bronze medal

    Abdelkrim Khelif was awarded one of the 2007 bronze medals of the CNRS. According to the official wording, "The bronze medal acknowledges the first years of research of a talented young scientist. This award is an incentive from the CNRS to pursue well engaged and already productive researches."

    Read more
  • Best Poster Award at ElecMOl’06

    A joint report of collaborative work with researchers of the Laboratoire de Physique Moléculaire was awarded a Best Poster Award during the ElecMOl’06 meeting (December 2006, Minatec, Grenoble, FRANCE). The topic of the communication was about "self-assembly & supramolecular architecture".

    Read more

Pages