Low Frequency Noise

Low-Frequency Noise (LFN) Disturbance - 16.02.21 -Teli Chinelis
https://www.finch-consulting.com/low-frequency-noise-disturbance/?

Investigation of environmental low-frequency noise - V.V.Krylov - Applied Acoustics Volume 51, Issue 1, May 1997, Pages 33-51
https://www.sciencedirect.com/science/article/abs/pii/S0003682X9600059X?