“Type of environmental noise characterized by sound waves 20 - 200 Hz.

Distinctive environmental noise issue that affects many households

Natural sources of LFN:

Wind, thunder, lightning, waves, earthquakes, and volcanic eruptions,

Life-related noise

(e.g., air conditioning, power distribution equipment, elevators, and fans)

Traffic noise

(e.g., railways and aviation)

Industrial enterprise noise

(e.g., substations, wind farms, and converter stations) (Liang, et al., 2023)

Construction noise

(e.g., piling and decoration).