Some industrial environmental have different sound sources that contribute to the overall sound level, as per example departments of bottling, texture departments, etc., it is not possible to act with individual and localized solutions. Stopnoise Engineering designs and manufactures soundproofing systems with panels “baffles” which are suspended on ceiling and able to reduce the reverberation phenomena. Besides making the whole environment more comfortable, these systems combined eventually to coverings and acoustic screens can give sound attenuations averages from 3 to 8 dB(A) according to the reverberation coefficients of the room to be treated.