Filters the sonic. This is the same filter that is available in the Log Editor. It is used to reduce high-velocity spikes. A high velocity spike can substantially affect processing time. It is recommended that this setting be at most, 25.

Reduces the number of depth points in the log. By default, this is set to 2.

This refers to the buffer area above the surface marker in the 1D Wave Equation Viewer that prevents the signal from distorting the model. It uses a mathematical equation to cancel out the return pulse. A buffer is not required below the bottom horizon because recording is stopped before an echo from below the bottom horizon affects the log.

This works in conjunction with the Surface Damping Samples option above to cancel out reflections arising up from the surface. It is recommended that you do not change these settings.

Click to display the Animation Viewer, which is an animated view of how the above settings will influence a sonic pulse moving through the earth in time.