The organoid surfaces used for this sound absorber work according to the Helmholtz resonance principle. Depending on the nature of the slits and holes in the support, any acoustic performance can be created using the corresponding damping. The ready-made, 70 mm-thick acoustic elements come in any size required and have an uninterrupted, folded edge. In addition to their natural fragrance, authenticity is one of the key characteristics of these sound absorbers.