Noise reduction device for soundproof tunnel

摘要

PURPOSE: A noise reduction device for a soundproof tunnel is provided to minimize noise transmitted to a multistory building adjacent to a road by enlarging a sound absorbing surface for the increment in a sound absorption effect on traffic noise. CONSTITUTION: A noise reduction device for a soundproof tunnel comprises sound absorbing members(10). The sound absorbing member is installed in the opening area of a tunnel structure. The absorber comprises a noise circulating device to reduce traffic noise. The absorber is formed of a hollow housing(12).