Anti-noise device e.g. noise barrier, manufacturing method, involves providing double siding retaining filler material, where siding is constituted of structure composed of transversal and longitudinal planks made of wood

摘要

The method involves providing a double siding (7) retaining a filler material. The siding is constituted of a structure (8) composed of transversal and longitudinal planks (10, 9) made of concrete or wood, where the planks intersect with recesses (11) permitting the noise to traverse the siding. The recesses of the structure are such that they represent gaps greater than 40 percentage of the siding.