L'utilisation des mesures intensimétriques en acoustique des salles

The intensity measurement technics in architectural acoustics have been developed since the early 1980's. Its utilization has mainly been directed towards the solution of noise transmission or sound isolation problems to analyse the radiation of partition with or without opening and, in some more specialized absorption measurements. As far as the acoustics related to concert halls, the impulse response analysis continues to be the predominant measurement method, since the intensity measurement technics are not very compatible with the time analysis. However, different experiments of data gathering, recorded either in a tightly controlled directional mode or in a omnidirectional mode using a robot or a tridimensional probe, have been reported in concert halls and auditoriums. This paper reviews some of these experiments and presents more recent measurements made in concert halls, showing different technics of reflection analysis as well as a propagation summary at different points of location