What is the sound barrier noise reduction?
The noise level of the sound barrier is related to the frequency of noise, the height of the sound barrier, and the distance between the sound source and the receiving point. The noise reduction effect of the sound barrier is very much related to the frequency component of the noise.
Sound barrier is mainly used for railway and highway along the current, sound barrier is mainly used for highways, elevated road, urban light rail subway and other traffic municipal facilities in the noise reduction noise, control traffic noise on the impact of the nearby urban areas can also be used Noise reduction in factories and other noise sources.
The greater than 2000Hz high frequency sound ratio of 800 to 1000Hz or so of the intermediate frequency sound noise reduction effect is better, but for about 25Hz low frequency sound. The sound wave wavelength is relatively long and easy to diffuse from the top of the barrier in the past, so the effect is poor. Usually, the sound barrier can reduce the high frequency sound l0-15dB. The height of the sound barrier can be designed according to the distance between the sound source and the receiving point. The height of the sound barrier can be doubled, and the noise reduction can be increased by 6dB. In order to make the noise reduction effect better, Sound source or receiving point.
