From a physical point of view, this type of absorber acts in a way which is both fascinating and effective, the micro-perforations convert sound energy into heat energy. The viscous friction of air in the holes is reinforced by resonance in the volume of air trapped between the material and the rear wall or existing ceiling, which generates the impressive acoustic properties of the micro-perforated sound absorbers.

 

The four quantities, diameter of the holes of the micro-perforation, the distance between the holes, the thickness of the panel and thickness of air space between the panel and backing determine the sound absorption coefficient of a micro-perforated sound absorber.

These four quantities allow you to tune a micro-perforated sound absorber to meet various room acoustic demands for speech, music or general noise control for a more pleasant and comfortable environment.