On March 10th, 2022, Mohamed brillantly defended his PhD thesis on speech enhancement for speech recognition and classification. It was an intense journey and it is not over, as Mohamed joined the SpeechTek team as a post-doc researcher. Thank you very much to the thesis reviewers Alberto Abad and Emmanuel Vincent, to the members of the exam commission: Alberto Abad, Fabio Antonacci, Matteo Negri and Luca Turchet and to the IECS doctoral school.