ACOUSTIC STRUCTURES WITH MANY DEGREES OF FREEDOM Russian patent published in 2018 - IPC G10K11/172 

FIELD: acoustics.

SUBSTANCE: this invention relates to acoustic structures made using a variety of flat acoustic inserts that are used to reduce noise that is used from a particular source, and also to methods for manufacturing a plurality of flat acoustic inserts and acoustic structures using a plurality of flat acoustic inserts. Plurality of flat acoustic inserts is inserted into meshes of cells and includes at least two different flat acoustic inserts, each of which includes a fixing part having an outer edge and an internal fixing boundary shifted inwards from the edge by a fixing distance, acoustic insert includes regulating the depth of diaphragm, which has an outer boundary that coincides with the inner boundary of the mount, the diaphragm boundary, which is moved inward from the outer boundary, which controls the depth of the diaphragm, to a depth regulating distance, as well as the diaphragm part attached to the border of the diaphragm, and the depth-regulating distance for different flat acoustic inserts is different.

EFFECT: implementation of a single adhesive application for attaching the fixing part of diaphragm covers to the walls of an acoustic cell and obtaining an acoustic structure that has many degrees of freedom is ensured.

20 cl, 10 dwg