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The Asisium Theatre was designed in the 1960s by the architect Michele Busiri Vici, with a capacity of 250 seats and a volume of around 2100 m3. The construction was renovated throughout.
Based on multi-functional requirements (conference room and cinema/theatre with Dolby Surround audio), a predictive analysis was conducted of the acoustic response of the theatre, using a 3D simulation model and referring to objective acoustic descriptors in accordance with the ISO – 3382 standard.
The combination of architectural and acoustic design resulted in the integration of elements for the reflection of sound, for the optimisation and control of reverberation, and to obtain optimal acoustic conditions both on the stage and in the stalls, in order to meet the various needs of the theatre.
The design of the electroacoustic system, featuring a number of technologies to control the equalisation and distribution of the amplified audio signal, enabled us to work on the optimisation of the passive acoustics, also taking into account the presence of a system.
The area studied measures around 370 m2, with a total volume of approx. 2100 m³. Based on the volume and the uses envisaged, an optimal curve was constructed for reverberation time at all the frequencies divided into octave bands, for music performances and conferences respectively. The aim of the analysis was to use a 3D model to verify solutions for the objectives established, favouring a curve that can be compared with the ottimo for speech, i.e. for clear, crisp listening, considering the main uses of the setting (conferences and cinema). A professional amplification system was also used, with a number of active control options using high-sensitivity digital parametric equalizers.
The fundamental element in the project was a new suspended ceiling, with geometries and materials studied to optimise reverberation time. The suspended ceiling was made from plasterboard with sound-absorbing material applied over it to avoid resonance, and slotted wood elements in the central part of the theatre and all across the circle, with sound-absorbing material placed between the wood and the plasterboard to optimise reverberation; the same material was used as a covering material for the back of the theatre. Applied on the side walls was a covering with smooth ashlar faced wood elements, with a height of two metres from the floor, with the aim of emphasising the frequencies proper to speech and boosting the efficiency of lateral transmission. The floors were tiled with porcelain stoneware, and all the fabric coverings were made from velvet and positioned on the windows, doors, curtains and the wall at the back of the stage. Velvet was also chosen to upholster the seats in the stalls. The ceiling above the stage was plastered with sound-absorbing plaster.
CP Progetti S.r.l.
