When one is looking to the reduction of the reverberation of a room by the means of the implementation of sound-absorbing materials, ITS offers a wide range of suspended ceiling tiles for reverberation control of tertiary premises for many applications related to acoustic comfort / soundproofing in buildings e.g. in offices and reception areas for social action, financial and insurance activities, administrations, commerce, culture (libraries, exhibition venues), premises for education and training, services to businesses and individuals, health, passenger infrastructure (stations, airports).

The suspended ceiling tiles for reverberation control of tertiary premises are a fundamental element of any soundproofing system for a space such as a meeting room, a classroom or a sports hall, an office, a restaurant (e.g. a canteen) and many other premises of public access buildings (PAB) when a noise limitation is sought (which is a major aspect of acoustic comfort, in relation to reverberation control).

In the absence of sound-absorbing materials of appropriate quality (to avoid unwanted acoustic waves reflections), installed in sufficient quantities, the reverberation of a room is too high, which negatively impacts the intelligibility of speech, and leads each speaker, wishing to be heard, to raise their voice : this is counterproductive, if everyone does the same, the consequence then being an increase in ambient sound levels.

The ceiling (which is sometimes an under-roof) of a tertiary room often constitutes for an acoustician an important deposit of surfaces which can (quite easily, unlike walls which have glazed parts, decorative elements which cannot be covered or floor on which the possibilities of action are limited) be treated acoustically by the implementation of high-performance tiles in terms of soundproofing.

Suspended ceiling tiles for reverberation control of tertiary premises must have a sufficiently high coefficient of sound absorption (the maximum reachable being 1 i.e. 100%) including medium and high frequencies which correspond to human speech (at these frequencies, acoustic performance is slightly impacted by the distance between the back of the tiles and the supporting structure): porous materials (mineral wool or polyester wool) are often appropriate.

The time (duration) of reverberation is often an acoustic performance indicator related to the implementation of suspended ceiling tiles for reverberation control of tertiary premises, characterizing the reduction of 60 dB (i.e. with a ratio of 1 million to 1) of the sound level existing in a room when a noise source is interrupted.

Reference values (sometimes regulatory) exist for this indicator, and allow the selection (during the construction of a building or during its renovation) of products adapted to the specific performance requirements of the considered space.

ITS offers suspended ceiling tiles for tertiary premises to control reverberation and prevent acoustic nuisance and noise pollution.

The prediction of the reverberation time that can be expected at the end of the installation of suspended ceiling tiles for the acoustic comfort of tertiary premises (which can be associated with an in-situ guarantee, if the works are entrusted to a partner fitting company ) can be carried out by the human resource of ITS, which can then use either calculation tools developed in-house [1], or commercial software packages [2].

[1] cf. Computer Aided Design (CAD): SILDIS® calculation software for acoustics and aeraulics in the construction sector (in Excel format)

[2] cf. Room acoustics simulation by ray tracing with ITS

 
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