This is the standard definition version of the Large Raindrop animation MPEG.
LARGE RAINDROP ANIMATION - For large and very large raindrops, the splash becomes energetic enough to create a wide range of bubble sizes trapped underwater, which produces a loud sound relatively low in frequency. The following animation is first simulated as a real-time large raindrop, and then slowed down to demonstrate the distinct sound of impact and the subsequent ring of the lower frequency sound made by the bubble.
GCMD keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 188.8.131.52.0