Improvement of acoustic comfort in a hotel waiting room

Project: Waiting room in a hotel hall
Room volume: 360m³
Acoustic problem: High reverberation times


The hotel waiting rooms and lounge areas are spaces of medium and large size, often characterised by large glass surfaces, where it is important to provide people with a relaxing and comfortable place and at the same time to guarantee the right privacy to people passing through, for example during check-in and check-out operations. In this case, acoustics plays a key role in ensuring the best living conditions for this type of spaces.


The proposed project of acoustic requalification concerns a hotel waiting room, whose volume is about 360 m³.
At the design stage, the room functional requirements have been examined and a phono-metric analysis has been carried out to find out the reverberation time before the acoustic treatment and the result achievable after the installation of Caruso Acoustic sound-absorbing panels.


According to UNI11690 standard, which indicates the average reverberation time in an occupied room around 0.5 s for venues up to 500 m³, and considering the volume of the room, it has been set as goal the reverberation time of 0.75 s in the empty room at an average of 250-2000 Hz.
The result of the analysis is an average reverberation time (RT) of 2.42 s, for the empty room.
As shown in the graph, on the basis of the acoustic absorption coefficients of the products – tested in reverberation chamber according to ISO354 standard – it was possible to determine the precise quantity of panels needed to reach the goal. With the integration of 22 hanging Silente panels of size, 180x60x5 cm, that fit perfectly into the architecture of the room, the reverberation time with occupied room is about 0.60 s, a value that ensures a good level of acoustic comfort. The panel fastening system by means of adjustable cables allow to freely modulate the distance of the panels from the ceiling, thus enabling great flexibility during installation according to different design requirements.


During planning, it is also important to study an appropriate distribution of the panels over the whole surface available in order to obtain a proper level of acoustic absorption in the entire room.