- sound absorption means "swallowing up” noise. It is the conversion of airborne noise in thermal energy that is created through friction on the absorbing acoustic fleece. The ratio of the non-reflected to the incident sonic energy is called noise absorption coefficient α. This is between 0 and 1.
- the reverberation time that is decisive for the acoustic wellbeing. It measures the period in which the acoustic pressure drops by 60 dB after the acoustic signal. Good absorption ensures a shorter reverberation time and thus, a lower noise level.
Together with the perforations available (download) and our acoustic fleece Geipel® Sound-excellent, our metal ceilings achieve excellent sound absorption values. The fleece is accurately thermally glued with the metal plates and considerably reduces dust exposure. Thus, it ensures fibre free ambient air. We hold many acoustic test certificates for the different perforations.
We also provide solutions that have been tested with acoustic measurements for applications in which noise transmission from room to room must be reduced.