Throughout my academic carrer, I have been interested in the analysis of speech sounds considered as modulated signals. In order to explore how sound signals change over time, I have developped a Matlab toolbox for the computation of amplitude- and f0-modulation spectra and spectrograms. It offers a powerful set of tools for analyzing temporal modulations in audio signals, providing valuable insights into the dynamics of sound over time. The toolbox has been successfully applied in various research domains. Some of its primary applications include the analysis of speech sounds in different languages (Varnet et al., 2017) and the study of natural soundscapes (Thoret et al., 2020).
Agence Nationale de la Recherche, projet Speech Code (2015-2018) ANR-15-CE37-0009
Agence Nationale de la Recherche, projet DRhyaDS (2023-2025) ANR-22-FRAL-0003
Selected publications and presentations:
Varnet, L., Ortiz-Barajas, M. C., Erra, R. G., Gervain, J., & Lorenzi, C. (2017). A cross-linguistic study of speech modulation spectra. The Journal of the Acoustical Society of America, 142(4), 1976. (article)
Thoret, E., Varnet, L., Boubenec, Y., Férriere, R., Le Tourneau, F.-M., Krause, B., & Lorenzi, C. (2020). Characterizing amplitude and frequency modulation cues in natural soundscapes : A pilot study on four habitats of a biosphere reserve. The Journal of the Acoustical Society of America, 147(5), 3260‑3274. (article)