Installing ceramic or porcelain tile is both an art and a science. Tile installers must know the composition of the tiles as well as how to lay them in place attractively. Besides the normal costs of labor and materials, a tile project's costs vary by the type of sub-flooring to be used as a foundation for the tile.
Three things can cause an EMI problem: A signal source creates some kind of noise, there is a transmission path for the noise, and/or there is a receiver sensitive enough to be distorted by the noise, as shown in Figure 1.
To understand the reasons behind these health conditions, people should consider the effects that are usually caused by noise pollution. In a modern megalopolis, noise pollution arises from many sources, such as traffic, barking dogs, noisy neighbors, aircraft, verbal advertising in streets, and many other environmental factors merging into one sound wall.