High efficiency non-fiber broadband metal sound absorption device

The utility model belongs to a novel technical field, especially relates to a high efficiency non-fiber broadband metal sound absorption device, which is composed of a panel, a side plate, a top plate, a bottom plate, a micro-perforation plate, a backboard, and the panel, the backboard, the side plate, the top plate, and the bottom plate constitutes the case. The micro-perforation plate is embedded between the two side plates and divides the case into two spaces to form the frond and back chamber. A micro-bore is arranged on the micro-perforation plate, wherein the micro-bore accupies up 0.1%-5% of the micro-perforation plate area, and the aperature is smaller than 0.2 mm. The panel is made of alloy foam metal material or the aluminum fiber material, and the backboard made of an armor plate or the aluminum plate. The thickness of the front and the back chamber can be adjusted based on the fact condition and the utility model is just mounted on the scene required to process when being used. The utility model has simple structure, thin and easy to carry, excellent sound absorption performance with a sound absorption coefficient larger than 0.6 and a sound absorption bandwidth nearly four octave bands, wide application cover, easy to wash, high temperature resistance and has excellent weather resistance, which can be reclaimed to use entirely, avoids secondary pollution and has excellent environment protection function.