g-Platform™ provides several radon modules: Band-pass filter, Band-pass Butterworth, Time-varying band-pass filter, Band-pass filter (Distributed).
Band-bass filter
This module works in the frequency domain and has a single bandpass filter mode, for the entire trace length, specified as four corner frequency values F1-F2---F3-F4. In the frequency domain application, the amplitude spectra of the input seismic trace and the filter operator are multiplied. The main goal of using band-pass operator is passing limited amplitudes via the cut-of frequencies. Where F1-F2 is the first damping slope, F2-F3 is maximum band pass and F3-F4 is the second (end) damping slope.
Band-pass spectrum view.
An example of the workflow for band-pass filtering:
Gathers: input (left) and output (right).
Amplitude-frequency spectrum: input (red) and output (red).