Noise leakages are structure borne or air borne. And contrary to what most people think, structure born leakages carry more noise, as sound travels faster through dense material than air. So the issue of Kenosha noise control is solved in a couple of ways, by space and by constructing interweaving layers of mass. Mass contains the air borne sound, and space stops structural sound from travelling very far. So the fundamental principle behind the sound isolation booths and Racine noise control is...