https://player.vimeo.com/video/673190615?h=f3ed80138d&badge=0&autopause=0&player_id=0&app_id=58479
Two terrains with a Noise Type of Wavy Turbulence applied. The terrain on the right has tfHighpass activated, which is filtering out all the low-to-mid frequencies from the Noise Type.
Set at 5%, by default.
Reducing the Radius setting increases the limit on the frequencies so that only the very fine details will come through the filter.
Increasing it will allow more details to pass through the tfHighpass filter.
The terrain on the left has a Radius value of 5%, increased to 50% on the right.
Increasing the Attenuate value will limit the amplitude that the frequencies can hit, decreasing the deformation in the terrain.