Acoustics – Design and sizing of plate resonators with circular, square or slotted perforations or not perforated (for silencers and absorbing linings) with software SILDIS®

In terms of acoustics, the software SILDIS® allows the sizing of plate resonators with circular, square or slotted perforations or not perforated for the design of soundproofing devices e.g. silencers and absorbent linings:

  • silencers for ventilation, air-conditioning networks or for industrial applications

127 sound transmission loss of a silencer with perforated resonator

Fig. 1 sound transmission loss of a resonant silencer with a 50 % open area ratio, with a length 1.2 m, consisting of splitters (baffles) with a thickness of 0.12 m made of a foam...

Noise prevention in a school restaurant room (canteen)

The prevention of noise in a school restaurant room (canteen) is a major imperative for a space whose purpose is not only, during a meal, to allow schoolchildren to nourish, but also to offer them an ambiance conducive to the necessary relaxation between learning sessions (which sometimes put them through the mill) and to desirable communications between classmates (which can then take place without being considered, as they would be in the classroom, as unwanted gossip).

This is why...

Practices, evolutions and trends for acoustical design in the construction sector, in relation to the developments of Computer Aided Design (CAD)

Overview in May 2020

When it comes to acoustics, design tasks in the construction sector are often complex, wether it comes to Research and Development (R&D) works or to engineerings tasks.

Until recently, they were based (e.g. for what realtes to the evaluation of performance indicators in terms of sound transmission through walls, sound absorption, limitation of noise propagation in ducts) on technical data possibly coming from two operating modes (and not one more), each one being...

Subcategories