Research & Development
Integration of the prediction of the spatial decay of speech in open spaces to the simulation software SILDIS®
Predicting the spatial decay of speech intelligibility in open spaces is a subject that acousticians are far from having covered, even though it constitutes a key step in many architectural acoustics projects.
Enclosed spaces are often an object of study in terms of acoustics and have been in the past the aim of the development of the Module 9 of SILDIS® software (prediction of sound decay in enclosed spaces) which does not, however, allow the consideration of screens such as barrier walls...
Integration of the prediction of industrial processes control valves aerodynamic noise to the simulation software SILDIS®
Predicting aerodynamic noise from industrial process control valves is no easy task.
In many installations in the chemical industry and in some power plants, aerodynamic noise is emitted by control valves in various industrial processes.
This noise is partially transmitted through the walls of the valves and also (and mainly) propagates downstream of the valves, being then transmitted by the pipes walls of networks, of more or less complex geometry (depending on the site constraints)
Integration of the sizing of silencers made of discontinued splitters (baffles) to the simulation software SILDIS®
Rectangular silencers with splitters (baffles) are the basis for many applications related to soundproofing when it is desired to limit the propagation of noise through openings with a circulating fluid. In many common cases (e.g. air conditioning networks, ventilation of equipment premises or of other rooms, ventilation systems for enclosures), splitters are most of the time continuous, i.e. with a height equal to that of the duct in which they are inserted, which facilitates their attachment...