FIELD: transportation.
SUBSTANCE: panel contains sound-reflecting panel and sound-absorbing material. Sound-reflecting panel consists of separate geometric figures, e.g. square planes attached by both sides to flexible material for instance to metal grid covered from both sides by fabric, e.g. of basalt fiber. Mat is placed on one of the sides of sound-reflecting panel. The mat can be made for instance of basalt wool.
EFFECT: vehicle sound-insulation improvement.
4 cl, 6 dwg, 1 tbl
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