The most recent application is Jon Claerbout's 1993 steep-dip deconvolution work. This approach involves predicting and removing undesired events, as opposed to predicting the desired events and disregarding everything else. These filters have a shape shown in Filter (9).
Steep-dip deconvolution allows events with velocities slower than the velocities of the desired events to be eliminated. Ground roll and water arrivals may be eliminated with this process.