АКУСТИЧЕСКАЯ ПЛИТА И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ

摘要

FIELD: industrial acoustic engineering, particularly broadband sound-absorbing means used in all industries to reduce noise generated by processing equipment. ^ SUBSTANCE: acoustic panel comprises smooth and perforated walls and sound-absorbing material arranged between the walls. Profiled sound-absorbing material surfaces are located between smooth and perforated walls and are inclined one to another at an angle less than 180°. The profiled surfaces are composed of separate members spaced predetermined intervals one from another. The smooth wall has one continuous shaped layer of sound-absorbing material. ^ EFFECT: increased sound-absorbing efficiency due to increased sound-absorbing surface and reduced labor inputs for panel production and source material consumption. ^ 4 dwg