The principle is that there are a large number of tiny holes inside the sound-absorbing material, such as wood wool sound-absorbing panels and honeycomb ceramic sound-absorbing panels. Sound waves can penetrate deep into the sound-absorbing material along these holes and rub against the edge of the hole to transfer the sound energy. Converted into heat energy, according to the law of conservation of energy, if there is more heat energy, there will be less sound energy.
The other part of the material does not have a large number of tiny holes and only has a single hole, such as grooved wood sound-absorbing panels. The principle of sound absorption with small holes is the trap principle. The sound energy incident through the small holes cannot be returned through the small holes. to the original space, so the sound energy in the original space weakens.
Sound Doctor's SBX-F20 honeycomb ceramic sound-absorbing panel is a porous sound-absorbing panel made of natural magnesite powder and grilled as raw material. It consists of a three-dimensional interpenetrating mesh from the surface to the inside. Small hole structure, when sound waves are incident on the surface of the material, most of the sound waves will enter the interior of the honeycomb ceramic sound-absorbing panel along the labyrinth of small hole tunnels. Sound waves propagate inside the honeycomb ceramic sound-absorbing panel, causing the air in the pores to vibrate and rub against the ceramic tendons that form the pores. Part of the sound energy is converted into heat energy; part of the sound energy reaches the rigid wall and is reflected back to the honeycomb. With ceramic sound-absorbing panels, sound waves will return to the labyrinth-like hole tunnel just like the first incident sound, causing friction between the air and the ceramic tendons, and the sound energy will continue to be transformed and consumed. The interaction of these two effects allows the honeycomb ceramic sound-absorbing panels to effectively consume incident sound energy and obtain good sound absorption effects.