Many people like to live in the high level, not only because the station is too far away from the road, far away from the road, such as traffic noise. In fact, it is not so simple to figure quiet, high-level noise pollution is also great.
According to reports, the upper and lower levels of noise pollution is not the same. For the lower level, its noise source is represented by two parts: vibration and sound. For the high-rise tenants, the influence of vibration will be weakened, but the sound in the form of waves passing, when the integer times of a certain layer height is reached when the wavelength of acoustic noise, the noise will be evident.
This is because there is no high-rise buildings around the shelter, the top is completely exposed to the sound waves under the stereo, so the noise is large. However, because of the attenuation of noise to a certain height, the influence of the higher floor occupants is smaller.
So what is the relationship between noise and floor distribution? Nanjing Environmental Protection Bureau of experts found that the spread of noise, high-rise residential noise between 30 to 70 meters maximum. Low floor but little noise, except for the green belt, trees can reduce the noise, but also because the low floor only receives close range of noise, and the higher floors receiving noise more widely, the traffic noise can be transmitted to the remote high.
Monitoring staff found that generally more than 5 buildings, noise decibels will increase with the increase in the floor, when the floor is higher, the noise has declined. Generally speaking, high-rise buildings, 5 to 24 layers of noise, the noise in the up to the top of the 11 layer up to more than 30 floors and more quiet. If it is a 1 storey building of the 26, 20 - and 22 largest noise.
Expert advice: the use of absorbing materials or install sound insulation barrier, as far as possible to absorb or reduce.