acoustic wall panels design by nina jobs Rokoko is a sound absorbing wall panel. Both materials are available several colours and in customized sizes. Frameless peat fiber moss, 100 % natural and ecological material with extremely good acoustic propertys (sound absorption class A) or aPerf is Frameless acoustic panels, made out of 25-aPerf® toxicologically harmless, mostly recycled polyester, 100 % recycable and nonallergic.