Reduction of sound emissions from a noisy building site machinery

Reducing noise emissions from noisy building site machineries is a recurring problem, since noise related to works e.g. drilling and earthworks (including in particular the use of excavators, hydraulic shovels, post drivers or other machines) can harm the tranquility of local residents over sometimes very long time intervals.

Complaints due to neighborhood annoyance are then not uncommon, often illustrating very real inconveniences that must be taken into consideration by civil engineering...

Acoustics - Soundproofing of teaching and training rooms

ITS will participate in a soundproofing project for teaching and training rooms in Paris (France) to improve their acoustic quality.

It will be a question of alleviating the mediocrity, in terms of sound comfort, of a recent construction, devoid of any acoustic material, i.e. likely to significantly absorb sound, with particularly harmful consequences as regards the use of these teaching and training rooms (in terms of intelligibility of speech which is very poor there, while obviously...

Noise control in the power generation industry - ITS

Noise control in the power generation industry is a necessity:

  • to maintain acceptable working conditions for employees of power plants, by sufficiently limiting their exposure to noise, according to European Directive 2003/10/EC, which considers as indicators:
    • the level of daily exposure to noise L EX, 8h: 80 dB (A) and 85 dB (A) are the thresholds, lower and upper respectively, triggering the action, 87 dB(A) is the limit value
    • the peak sound pressure ρpeak: 112 Pa ie 135 dB(C) and 140...