| 摘要 |
FIELD: engineering of devices for protection from effect of noise, possible use as standalone product for protecting ears of person, working under conditions of high acoustic noises, and also in composition of aviation helmets, pressure helmets. ^ SUBSTANCE: headphones contain rigid hollow body and amortization cushion. In the body, circular wall is asymmetrically mounted. Also, amortization cushion is positioned on end surfaces of body and wall. ^ EFFECT: increased noise damping due to increase of specific pressure and interference addition of sound oscillations. ^ 2 dwg |
