| 摘要 |
FIELD: construction, ground based structures. ^ SUBSTANCE: invention pertains to construction, in particular to devices designed for protection from sound waves (noise), as well as from other radiations and their attenuation, and can be used in noise screens. The sound attenuating panel consists of perforated panel, blank panel, sound absorbing element, and covers for joining the perforated and blank panels, located between the perforated and blank panels. The perforated panel is made with openings in the form of slit-type traps with reflectors, turned in the direction of the sound absorbing element. The perforated panel consists of at least, two slit-type traps, whose reflectors are at different angles to the plane of the perforated panel. The ratio of the total area of the perforations to the area of the walls of the perforated panel is in the range 0.2 to 0.4. The technical outcome lies in the increase of the absorption capacity of the panel. ^ EFFECT: increased absorption capacity of the panel. ^ 3 dwg |
