Profile picture for user Varnet

Léo Varnet

Laboratoire des Systèmes Perceptifs


29 rue d'Ulm

75005 Paris France


2nd floor
Selected publications
International Journal article  

Varnet, L., Ortiz-Barajas, M., Erra, R., Gervain, J. & Lorenzi, C. (2017). A cross-linguistic study of speech modulation spectra. The Journal of the Acoustical Society of America, 142(4), 1976. doi:10.1121/1.5006179

International Journal article  

Varnet, L., Knoblauch, K., Meunier, F. & Hoen, M. (2013). Using auditory classification images for the identification of fine acoustic cues used in speech perception. Frontiers in human neuroscience, 7, 865. doi:10.3389/fnhum.2013.00865

International Journal article  

Varnet, L., Wang, T., Peter, C., Meunier, F. & Hoen, M. (2015). How musical expertise shapes speech perception: evidence from auditory classification images. Scientific reports, 5, 14489. doi:10.1038/srep14489

International Journal article  

Varnet, L., Meunier, F., Trollé, G. & Hoen, M. (2016). Direct Viewing of Dyslexics' Compensatory Strategies in Speech in Noise Using Auditory Classification Images. PloS one, 11(4), e0153781. doi:10.1371/journal.pone.0153781

Short Biography

I graduated from Grenoble INP and University Grenoble 1 where I followed a double curriculum (Signal processing engineer / Master’s degree in Cognitive Science). After working as a research engineer at the Lyon Neuroscience Research Center (CRNL) for one year, I prepared a thesis in the Laboratory on Language, Brain and Cognition (L2C2, Lyon). During that three years period, I developed and applied a new statistical method for revealing the acoustic cues used by the listeners during speech in noise comprehension. Then I was recruited as a post-doctoral researcher at the Ecole Normale Superieure (Paris) in 2016, where I am currently investigating the perception of amplitude and frequency modulations by the auditory system in humans.

Research Areas

I have a strong interest in the auditory perception of speech and non-speech sounds, and in the development of statistical and signal processing techniques for research purposes. I am currently conducting a research program exploring the auditory perception of amplitude- and frequency-modulations cues for humans, and another program exploring phoneme categorization strategies in normal-hearing and impaired-hearing people. For those purposes, I developed signal-processing tools based on the concept of modulation spectrum, auditory models of temporal-modulation processing and psychophysical methods such as the Auditory Classification Image.


I have taught C++ programming, statistics and speech processing as a teacher assistant in charge of practicals in Polytech Lyon.