Analysis of Acoustic Requirements of a Small Hall of a Theatre According to the Coupling Factor with the Stage Tower

In recent years in Italy, the renovation or construction of public buildings, especially auditoriums (for music) and theaters (for prose and the lyric) has become a widespread practice in urban restoration of small and medium-sized towns. The most pervasive tendency in contemporary architectural design of auditoriums and theaters is to realize one-space hall without galleries or balconies, with an accurate furniture design. In the case of theaters, the size of the stage tower is comparable to the one of the audience hall and it has an equivalent absorption area similar to the hall one, depending on the scenes equipments in the stage tower. In this paper the results of the analysis of acoustic requirements of a small theatre hall built in San Miniato (Tuscany region, Italy) are shown and discussed. The analysis has been conducted using the acoustic simulation software RAMSETE. In particular the influence of the stage tower on the room acoustic has been examined, focusing on the coupling factor between the two spaces.