Characterization of acoustic properties of surfaces based on spatio-temporal information

By Antoine Richard

This PhD project aims at establishing new methods to estimate the acoustic properties of surfaces, with a specific focus on surface impedance and scattering properties. Such properties have a major influence on the acoustic conditions of a given environment, but they are only partially estimated in the current measurement methods. This lack of information thus affects the reliability of acoustic predictions.


The proposed approach is to extract spatial features of the sound field from microphone array measurements. Based on this spatial information, detailed estimates of the surface properties of materials can be inferred. Ultimately, the aim is to characterize surfaces from in-situ measurements in complex realistic environments.


The project is expected to have a considerable impact in areas such as measurement techniques, room acoustic predictions and design of materials
7 APRIL 2020