Gaël Richard is Executive Director of Hi!Paris and Professor at Télécom Paris, Institut Polytechnique de Paris. His research work lies at the heart of digitization and is dedicated to the analysis, transformation, understanding and automatic indexing of acoustic signals (including speech, music and environmental sounds) and, to a lesser extent, heterogeneous and multimodal signals. In particular, he has developed several source separation methods for audio and music signals based on machine learning approaches.