Acoustic panels are composed of many types of layouts, and there are many types, including sound-absorbing wedge, dispersion sound-absorbing panels (three-dimensional dispersion sound-absorbing panels), aluminum honeycomb perforated sound-absorbing panels and wooden perforated sound-absorbing panels.

 

The sound-absorbing wedge is a special sound-absorbing layout material used for strong sound-absorbing field. It is made of porous (or fibrous) materials to form a cone or wedge-shaped sound-absorbing body, which is hard and non-deformable sound-absorbing structure. The sound-absorbing wedge is suitable for strong airflow environment. The main object is a high-quality anechoic chamber. It is more useful for low-frequency absorption. It can eliminate standing waves and meet the needs of eradicating echo. The low cut-off frequency sound absorption coefficient is greater than 0.99, made of polyester Compared with the conventional sound-absorbing wedge, the finished V-shaped and W-shaped sound-absorbing wedge have the characteristics of small size and more reasonable price. In addition to all the functions of a flat sound-absorbing panel, the dispersion sound-absorbing panel can also conduct sound waves at different angles through its three-dimensional surface, eliminating the blind spots in the dispersion process of sound waves, improving sound quality, balancing sound, thinning accents, and weakening The high pitch compensates for the low pitch.

 

The structural layout of the aluminum honeycomb perforated sound-absorbing panel is a perforated panel and a perforated back panel, which rely on high-quality adhesive and aluminum honeycomb core to directly bond to form an aluminum honeycomb sandwich layout, and a layer of sound-absorbing cloth is pasted between the honeycomb core, the panel and the back panel. Because the honeycomb core in the honeycomb aluminum panel is divided into many closed cells, it hinders the air activity and obstructs the sound wave, improves the sound absorption coefficient (up to 0.9), and improves the strength of the panel itself, so that the size of the single panel It can do more and further increase the degree of freedom of planning. It can plan different perforation rates according to the room acoustics plan, and control the sound absorption coefficient of the combined layout within a certain range, which not only achieves the planning effect, but also can reasonably control the cost , After controlling the perforation aperture and pitch, the perforation rate can be changed according to the customer's requirements. The maximum perforation rate is less than 30%. The aperture is usually ∮2.0, ∮2.5, ∮3.0 and other standards. The backplane perforation needs are the same as the panel. Use high-quality non-woven fabrics and other sound-absorbing materials

 

The perforated gypsum board has cylindrical holes penetrating through the front and back of the gypsum board. The back surface of the gypsum board is made of a combination of air-permeable backing materials and sound-absorbing materials that can absorb incident sound energy. The sound absorption mechanism is the internal material. There are many small interconnected pores, along which sound waves can penetrate deep into the data, and conflict with the data to convert sound energy into heat. The sound absorption characteristics of porous sound absorption materials gradually increase with the increase of frequency, which means that low frequency absorption is not as good as high frequency absorption.