There is no strict distinction between high-frequency and low-frequency vibration, generally below 10Hz is low frequency, 10--1000Hz is medium frequency, and above 1000Hz is high frequency.
In the vibration isolation design, the interference vibration above 100Hz is usually called high-frequency vibration, the vibration of 6-100Hz is defined as medium-frequency vibration, and the vibration below 6Hz is low-frequency vibration.
Low frequencies: earthquakes, orbital vibrations
IF: car, generator
High frequency: high-speed rotating equipment, high-speed gears, rolling bearings