How to deal with low-frequency noise effectively

Low-frequency noise is a sound with a frequency below 200 Hz. It is also a type of noise and has a great impact on the human body. Many people don’t know how to deal with low-frequency noise. For this type of noise, we must pay attention to controlling the noise and finding a way to spread it.

1. How to effectively control low-frequency noise

To control low-frequency noise, we must first accurately find the path of noise propagation, effectively control the propagation path, select appropriate vibration and noise reduction materials, and design reasonable vibration and noise reduction structures to effectively control the propagation of low-frequency noise. Low-frequency noise is mainly structure-borne sound that is transmitted through vibration. The use of vibration isolation assisted by sound absorption and sound insulation can effectively reduce structure-borne noise, thereby reducing the low-frequency components of the noise, which will effectively reduce the impact of such noise on residential interiors. In practice, installing stable and efficient vibration reduction and isolation devices on equipment and installing noise reduction facilities with stable performance and good sound absorption and insulation effects in the computer room are effective ways to control low-frequency noise.

2. There are four main types of low-frequency noise sources

Elevator, transformer, central air-conditioning (including cooling tower) and traffic noise generally refers to sounds with frequencies below 500 Hz (octave). The direct physiological impact of low-frequency noise is not as obvious as that of high-frequency noise. However, domestic experts who are engaged in low-frequency noise research have recently pointed out that low-frequency noise can cause neurosis such as headaches and insomnia. At present, domestic sound environment quality standards and monitoring methods are mainly aimed at the detection of high-frequency noise. Since the decibel level of low-frequency noise is not high, citizens are often tortured by noise but have no way to complain.

3. Note

Low-frequency noise can directly reach the human ear bones and cause tension in the human sympathetic nerves, tachycardia, high blood pressure, and endocrine disorders. People who are forced to accept this kind of noise are prone to become annoyed, agitated, angry, and even lose their minds. If you are exposed to low-frequency noise for a long time, it is easy to cause neurasthenia, insomnia, headache and other neurotic disorders, and even affect the fetus in the pregnant woman's belly, causing fetal malformation, etc. Living in such noise for a long time will have a great impact on people's hearing and nervous system, and it is an organic and irreversible change.