AcouBAT by CYPE is a tool developed by CYPE and the CSTB (Centre Scientifique et Technique du Bâtiment) with the aim to help users study the sound insulation and absorption of buildings. It calculates the indices that evaluate the insulation of airborne sound (indoor and outdoor), impact sound insulation and the reverberation level in indoor spaces, in accordance with the procedure contained in the EN ISO 12354:2017 code.