| 摘要 |
A sound absorbing and/or noise reducing wall or baffle comprising a core (10, 11) of sound absorbing and/or reducing material, a perforated outer cover (12) covering the major part of the outer surface of the sound absorbing core material and having lower edge portions (15) extending longitudinally along opposite sides of the wall or baffle, and anchoring means (19) for anchoring the opposite lower edge portions (15) of the perforated cover (12) to the ground (16) or to another supporting surface. The inner core (10, 11) may comprise inner blocks (10) of mineral wool of lower density and outer panels (11) of mineral wool of higher density, and the average density of the core may be 40-450 kg/m<3>. The wall may be built from a set of elements comprising a number of first elements having a rectangular outline and at least one second element having a trapezoidal outline. |
