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The Application of Sound Absorption Ceiling Board in Hospital Noise

Jun. 19, 2019

Studies have shown that by installing Sound Absorption Ceiling Board, hospital noise can be reduced, thereby reducing patient stress, improving their sleep, and helping patients recover. Today, through professional China Organic Fiber Ceiling Board Manufacturer to find out how ceilings can reduce hospital noise and how to properly choose sound absorption ceiling board in hospitals.

Mineral Fiber Ceiling Board

Mineral Fiber Ceiling Board

To control the noise in the ward, the researchers installed sound absorbing ceiling board on the upper and half-area ceilings of the corridor walls. After the sound absorbing ceiling board are installed, the noise level has dropped by more than half. Patients, health care providers and visitors can still listen to each other after reducing the volume of their speech. In addition, the reverberation time has been reduced to less than half of the original. Before installing the sound absorbing ceiling board, nearly two-thirds of the patients and staff felt that the area was very noisy, and some patients felt that the area was very noisy. After installing the sound absorbing ceiling board, more than 90% of the staff and patients thought the ward was quiet or very quiet. This study suggests that new hospital buildings, especially inpatient ward buildings, will achieve good noise reduction if they are designed with sound absorbing materials.

Hard acoustic reflective surfaces commonly used in traditional hospitals, such as concrete and plasterboard, can cause sound reverberation and longer reverberation time. When the reverberation time in the environment is too long, the sound will be superimposed, which will reduce the clarity of the language. Studies have shown that the length of reverberation time depends largely on the presence or absence of sound absorbing materials in the room. The installation of high-performance sound absorbing ceiling board can effectively reduce the noise level and noise perception, and improve the clarity of the language, thus reducing the work pressure of the staff. In order to reduce the noise level and shorten the reverberation time, the noise reduction coefficient (NRC) of the sound absorbing ceiling board should be 0.70 or more. However, the actual noise reduction factor required for indoor ceilings in medical environments should also depend on the size of the space, the specific function, and the noise reduction factor of other materials.

So, how to choose the right ceiling?

Focus on noise reduction coefficient (NRC)

The noise reduction factor refers to the sound absorbing ability of building materials (such as ceilings and walls) from various angles. The noise reduction factor is expressed as a value from 0.00 to 1.00, representing the average percentage of sound absorbed by the ceiling. The higher the value is, the stronger the sound absorbing ability of the material surface is. Usually, if the height of the top surface of the room is 3 meters, the most cost-effective way to reduce the reflection time is to install the sound absorbing material on all or part of the top surface in the form of a ceiling. If the top surface height is higher, reaching 3.6 meters, then some sound absorbing materials should be installed on the wall to help shorten the reverberation time. The sound absorbing wall is treated with linen, fabric soft packs and parquet panels with mineral wool or glass wool backing.

What's s the function of choosing correct ceiling?

The ceiling is a key element in establishing a good acoustic environment. Proper selection of the ceiling not only improves the sound quality in the space, but also reduces the sound interference between different spaces. In terms of language privacy, the acoustic requirements of open space and closed space are different. Therefore, when choosing the ceiling of a hospital building, using the same sound absorbing ceiling throughout the hospital is not necessarily the best option. Instead, different areas use different ceilings for different acoustic balance designs.

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