As JCarter426 and ndix UR pointed out, that's mainly what the filter appears to be. It's all a matter of determine what the right combination is at this point.
I'm using Goldwave for the videos above but I might have to look into Audacity at some point to see if I can get different results.
Those interested in attempting this with either Goldwave or Audacity are encouraged to post their own videos, and provide details on how they accomplished what they did.
My filters so far . . .
Filter #1
In Goldwave, highlight clip and then go to Effects at the top.
In the drop down menu, choose Echo, then Presets, then Stereo Reverb
Change Delay to "0.0500"
Add the HK-filter.
Adjust volume as needed.
Filter #2
In Goldwave, highlight clip and then go to Effects at the top.
In the drop down menu, choose Echo, then Presets, then Stereo Reverb.
Change Feedback to "9.00"
Change Volume to "0"
Change Echoes to "1"
Add the HK-filter.
Adjust volume as needed.