Suspended ceiling sound absorber features

Ceiling sound-absorbing body is a sound-absorbing component that is scattered and suspended in the upper part of the building space to reduce indoor noise or improve indoor sound quality.

It has the characteristics of less material consumption, lighter weight, less investment, high sound absorption efficiency, flexible arrangement and convenient construction. It is mostly used in indoor gymnasiums. Its various shapes and furnishings can enhance the interior decoration effect. The most important thing is its sound-absorbing performance, which can prevent echo defects in large halls and effectively reduce the reverberation time.

The main three factors of sound absorber design:

1. Materials and Structures: Common space absorbers consist of skeletons, armor layers and sound-absorbing fillers. The choice of materials should depend on the size, stiffness, and fitting requirements of the space absorber. Skeleton can use wood, angle steel, thin-walled steel and so on. The protective surface layer can be made of plastic window screening, plastic mesh, steel wire mesh, and perforated plates of various plates (such as sheet steel, aluminum plate, plastic plate, etc.). The thickness of the perforated plate may be 0.5 to 1.0 mm, the pore diameter may be 4 to 8 mm, and the perforation rate Should be greater than 20%. Acoustic fillers are usually made of ultra-fine glass wool-wrapped glass fiber cloth. The packing density is 25-30 kg/m3. The thickness should be selected within 5 to 10 cm according to the spectral characteristics of the sound source.

2. Number of Suspensions: The number of suspensions of the space-absorbing body shall be calculated and determined based on the sound-absorbing characteristics of the sound-absorbing body and the amount of sound absorption required to reduce indoor noise (or control the reverberation time). When the panel-shaped space absorber is designed, if the total area of ​​the absorber is equivalent to 30 to 40% of the top area of ​​the building, the efficiency of sound absorption by the panel-shaped space absorber can be optimized. In order to meet the requirements of reducing noise or controlling the reverberation time in actual projects, the total area of ​​the space absorber should be 40 to 50% of the top area of ​​the building.

3. Suspension: Space absorbers are mostly suspended at the top of the building space, and are mostly suspended from the top. The plate-shaped space acoustic absorber can be horizontally suspended and suspended, and can also be vertically dispersed and suspended. It can also be suspended horizontally and vertically. In the same total area, the noise reduction effect is basically the same. The height of the horizontally suspended plate-shaped space acoustic absorber from the ceiling is generally about 1/5 to 1/7 of the room's net height; if conditions permit, it can be hung lower and closer to the sound source. In order to improve the effect of building decoration of suspended sound absorbers, comprehensive consideration should be given to the form, color, and suspension methods of space absorbers. If the space absorbers are suspended into a certain artistic pattern and matched with lighting, lighting, ventilation, and architectural decoration, the overall effect will be better.

Scope of application: Widely applicable to indoor gymnasiums, factories with excessive noise, also applies to radio stations, television studios, studios, schools, big theaters, libraries, cultural centers, auditoriums, multi-function halls, conference rooms and concert halls Such places require higher sound quality.