Sound barrier wall to absorb the noise of road traffic has a hard wall to carry a suspended cassette in a shell structure to give acoustic insulation by sound absorption

摘要

The sound barrier wall, to suppress the noise of road traffic, is composed of at least two shells and at least one hard wall (3). A cassette forming a sound barrier wall (4) is suspended at the front of the hard wall (3). The sound barrier wall has openings for the sound to enter and be absorbed in an insulating zone. The cassette is of a sound-absorbent elastomer material, or it is of a hard plastics with an elastomer cladding.