I live in an apartment in the city, and while the demising walls between units are relatively stout, it should be noted that I often hear the shrill bark of my neighbor’s dog and the skittering sound of scampering paws.  On occasion my upstairs neighbor will take to jumping rope, which produces a curious rhythmic click-slap followed by a kind of “bam!” sound as said neighbor’s feet hit the slab above my head.  When I found out about Green Glue Noiseproofing Compound, I wondered what kind of damping effect judicious application throughout my abode might …