A quite large variety of software appears useful to calculate interesting parameters for the rooms’ acoustics quality, after previous receiving of input data. In phase of measurements, it is necessary to set correctly the equipment and remind each time the used settings, in order to guarantee both the repeatability and the reproducibility of the measures, even using a different software. ODEON is a specific software used world-wide for prediction of room acoustics: given a 3D-model, the acoustics can be predicted and represented. The first part of this research aims to test the validity of ODEON software not only as a simulation tool, but also as a useful measurement tool, firstly by verifying rooms acoustic features in their current conditions.