FOAM ACOUSTIC Russian patent published in 2013 - IPC E04B1/74 E04B1/99 

FIELD: construction.

SUBSTANCE: invention is designed for use in the field of scattering and transfer of acoustic oscillations for the required distance, and also for use in the construction industry, for instance, as light bearing structures and heat-insulating covers protected against atmospheric and other effects, apart from the damaging mechanical one. The passive acoustic element comprises a foam plastic coated with a membrane from all sides - with a film of "Scotch tape" type, making it possible to bend the foam plastic without its damage and evenly distributed the acoustic signal along the entire cross section of the foam plastic.

EFFECT: cheaper and simplified design, bending of a panel in various planes at a certain thickness for any degree, without considerable deterioration of acoustic abilities, propagation o sound to all sides in three extends of freedom and outside of the material, increased sound capacity of oscillation transfer due to contactless action at a membrane only due to oscillated air, for instance.

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