| 摘要 |
The invention relates to a sound-absorbing construction board, in particular for wall or ceiling installation, having a front side facing the sound source, a back side facing away from the sound source, and a plurality of perforations comprising a prescribed geometry, in particular having a round, oval, or rectangular cross section, and extending from the front side, through the sound-absorbing construction board, to the back side, wherein the perforations are covered by at least one substantially airtight cover on the back side, wherein the at least one back side cover is connected, in particular glued, to the back side of a base body of the construction board comprising the perforations, so that a mounting surface is smaller than a total back side area of the back side of the base body, removing a perforation proportion of the back side. |
