The research and experimental project of Maestro Marco Francini “The Voice in Ancient Spaces”, presented at the International Conference “The Acoustics of Ancient Theatres”, symposium, organized by the Italian Acoustics Association, TC-RBA of the European Acoustics Association (E.A.A.) and the Hellenic Institute of Acoustics (HEL.IN.A.), held in July 2022, was published in the Italian Journal…