Noise reducing equipment

摘要

The noise reducing equipment of the present invention is used in combination with a vertically oriented sound barrier wall to reduce the level of noise from a source of sound such as traffic generated on one side of the sound barrier wall and comprises an assembly composed of a predetermined number of interconnected resonant chambers mounted in tandem to a sound barrier wall such that the assembly of resonant chambers extends from the sound barrier wall on only the side thereof opposite the source of generated sound and at a location adjacent the top end thereof with each of the resonant chambers having a plurality of walls defining separate volumetric areas with the resonant chamber closest to the sound barrier wall having a volumetric area larger than the volumetric area of each of the other resonant chambers. The noise reducing equipment should also include a plurality of sections composed of sound absorption material in an arrangement with each section extending between adjacent resonant chambers and being laterally spaced apart from one another to form an opening to each resonant chamber.