Low-frequency noise usually refers to sounds with frequencies between 20 Hz and 200 Hz. This type of noise has a long wavelength and can penetrate walls and obstacles, so it is particularly difficult to avoid and eliminate in closed spaces. The hazards of low-frequency noise mainly include the following aspects:

Impact on hearing:
Long-term exposure to high-intensity low-frequency noise may cause hearing damage, and in severe cases may cause deafness.
Neurosis:
Low-frequency noise may cause neurotic symptoms such as headaches, insomnia, anxiety, and depression.
Deteriorated sleep quality:
Affects deep sleep, leading to dreaming, easy awakening, and insomnia, thereby affecting the mental state and work efficiency of the next day.
Cardiovascular and cerebrovascular diseases:
Interferes with the endocrine system and may cause cardiovascular and cerebrovascular diseases such as hypertension and heart disease.
Learning and work efficiency:
Disrupts learning and work, reduces attention and memory, and affects academic performance and work efficiency.
Impact on pregnant women and fetuses:
Long-term exposure of pregnant women to low-frequency noise may have adverse effects on fetal development, such as congenital malformations.
Mental health:
Continuous low-frequency noise stimulation may cause negative emotions such as irritability, depression, anxiety, and even develop into depression.
Physiological function interference:
Long-term exposure may lead to health problems such as decreased immune system function and endocrine disorders.
Nutritional consumption:
Noise will increase the body's demand for certain nutrients, such as vitamins, trace elements, etc., affecting physical health.
Digestive system:
Noise can increase adrenaline secretion, reduce saliva and gastric juice secretion, and may affect the normal function of the digestive system.
In order to reduce the impact of low-frequency noise, a variety of measures can be taken, such as using sound insulation materials, sound-absorbing materials, such as glass wool, mineral wool, perforated sound-absorbing panels, etc.; planting plants indoors, because lawns and trees are also effective sound-absorbing materials; using noise-reducing headphones; improving the layout of living and working environments to avoid being in high-noise environments for a long time; and maintaining good work and rest habits to enhance the body's resistance.