Resumen de A case history of coupled volumes in an historical opera house
Diego Cappello, Nicola Prodi, Roberto Pompoli
Due to the massive use of technological resources, the management of the stagehouse in an opera house has become a more and more sophisticated issue during the years. Currently new fly towers are designed to host several stage settings simultaneously thanks to a consistent increase of volume. The same trend can be verified also in the case of restorations, and the most important consequence is the substantial change in the traditional ratio of volumes between the main hall and the stagehouse. Since the system can be actually regarded as an coupled one, a potential threaten might result for the hall acoustics. In this work a case history covering the above issues is presented in the case of an historical opera house, the Zandonai Theatre in Rovereto, Italy. In the first place acoustical measurements were done with the aim of capturing the acoustical coupling of the two volumes. Then statistical and computer models were prepared and tuned upon measurement results. By doing so the alterations induced on the sound field by the new and bigger fly tower could be predicted with good precision. In the work the whole process is described and the suitability of the above numerical methods is discussed.
