The input data useful for sizing the partitions of a cabin - construction specially designed to protect people (e.g. machine operators) from ambient noise, consisting of a fully enveloping structure - are mainly the level of acoustic performance required by frequency (insertion loss, residual sound pressure level) and also - where appropriate - the existence of additional constraints such as the possibility of disassembly, the transportability, the reaction to fire, the need for the partitions to provide thermal insulation, or to be translucent to allow the vision etc ...

In case of constructions located outdoor, resistance to wether and to corrosion must also be taken into account, what may affect the definition of appropriate construction systems.

Other parameters may be involved such as the authorized mass, the required longevity or the available budget.

Whether control and monitoring cabins, or fixed booths for operators or even cabins mounted on vehicles are concerned, the sizing of the partitions must account the needs in terms of sound reduction (this is to the ability to oppose the transmission of noise), the effects of amplification of sound levels related to the existence of the cabin itself - specific constraints related to the acoustic comfort (speech intelligibility) and to the livability (visual aspect) inside may necessitate the use of particular absorbing linings, for walls, for ceiling or even for the floor - and also the needs in terms of accessibility whose effectiveness depends on the airtightness (rotating doors, sliding doors) and also the needs for air circulation (ventilation), the needs in terms of cuts for ancilliaries (cables, ducts, pipes ...).

These various input data are necessary for the selection of products and construction systems appropriate to the acoustic performance required for the partitions of a cabin depending on the acoustic performance and on the respective area of its various subsets: acoustic insulation panels for facades, roof and floor where necessary, access, glass frames, silencers, cuts and openings.