Does anyone know about this way to find wather?

[nelson]

I was searching the net and i found this interesting way to find wather in combination with geosuite software and seems to be very basic way to work with it, a hammer punched over a metallic plate on the ground, two rods stacked on the ground and a digital voice recorder to get the sound propagation thru the rods. Then it looks that the recorder sound is analysed and compared by geosuite software.
Anyone knows more about this?

I m also looking for geosuite software

http://www.youtube.com/watch?v=uI0IaxY5E7o

http://www.youtube.com/watch?v=E2loXRKfAss

Regards

Nelson