Metal screens are not only decorative in modern space design, but their acoustic properties also have unique application value in noise control.
First of all, the acoustic performance of metal screen is closely related to its material characteristics. The metal itself has a certain density and can reflect and absorb sound waves. For example, screens made of steel are relatively heavy and have certain advantages in blocking low-frequency noise. They can resist vibrations caused by sound waves through their own mass inertia, thereby reducing the spread of noise. Lightweight metal screens such as aluminum alloy perform better at processing high-frequency noise. Their surface characteristics can scatter and absorb high-frequency sound waves, changing the propagation direction and energy distribution of sound.
Secondly, the structural design of the screen has a significant impact on the acoustic performance. Perforated metal screens are a common design with good acoustic properties. The size, shape and density of perforations affect the path of sound. Smaller perforations can effectively absorb sound waves in the mid-to-high frequency range, because sound waves entering the perforations will be reflected multiple times inside and consume energy. Larger perforations have a certain regulating effect on low-frequency noise, causing low-frequency sound waves to resonate when passing through them, converting sound energy into other forms of energy such as heat energy, thereby reducing noise intensity. In addition, the frame structure and internal filling materials of the screen cannot be ignored. The stability of the frame can reduce secondary noise caused by vibration, and filling sound-absorbing materials such as rock wool, sound-absorbing cotton, etc. can greatly enhance the overall sound-absorbing effect.
Furthermore, metal screens have various applications in different noise control scenarios. In open office spaces, metal screens can be used as partitions, which not only divide different work areas, but also absorb and block noise generated by personnel communication and operation of office equipment, improving the acoustic comfort of the working environment. In public places such as restaurants and hotel lobbies, metal screens can be used to create a relatively independent yet transparent space, reducing the interference of ambient noise in specific areas. For example, setting up a metal screen in the seating area of a restaurant can provide customers with Quieter dining environment.
In addition, the combination of metal screen and other acoustic materials can further optimize the noise control effect. For example, paired with acoustic curtains, they can form complementary sound absorption and insulation effects in different frequency bands. Metal screens first process mid- and high-frequency noise, while acoustic curtains focus on blocking and absorbing low-frequency noise. The two work together to reduce environmental noise more comprehensively.
Then, the installation position and angle of the metal screen will also affect its acoustic performance. Installation close to the noise source can more effectively block the direct transmission of noise; while installation at a certain angle can change the reflection direction of sound waves, causing them to reflect or scatter to specific areas, reducing the impact on other areas. For example, in a conference room, installing the metal screen near a window or corridor where noise is easily transmitted, and adjusting the angle according to the indoor acoustic environment, can improve the acoustic quality of the conference space.
Finally, with the development of technology, the acoustic performance of metal screens can be further optimized through intelligent control. For example, a metal screen with a variable perforation rate is used to adjust the perforation rate through electric or pneumatic devices based on real-time monitoring data of environmental noise to dynamically adapt to the needs of different noise scenarios and create a quieter and more comfortable space environment for people.
