SOUND ABSORPTION CONSTRUCTION FOR THE PRODUCTION PREMISES Russian patent published in 2018 - IPC E04B1/84 G10K11/16 

FIELD: acoustics.

SUBSTANCE: invention relates to industrial acoustics. Technical result is achieved by the fact that the sound-absorbing construction for production premises is made in the form of the continuous and perforated walls, between which the multi-layer sound-absorbing element is located, characterized in the fact that between the sound-absorbing layer and the layer of the reflecting material of the complex profile adjacent thereto, the element of resonant type is located, which is made in the form of a rigid resonance plate with resonant openings, performing the functions of the neck of Helmholtz resonators, while the functions of the volumes of the Helmholtz resonator are performed by the layer of sound-reflecting material of the complex profile with perforation, which consists of uniformly distributed hollow tetrahedra that allow to reflect sound waves, which fall in all directions, the perforation is performed on hollow tetrahedra, which are not connected to the resonance openings of the rigid resonance plate.

EFFECT: technical result is increase in the efficiency of acoustic suppression and reliability of the structure in general.

1 cl, 1 dwg