You know ... I wouldn't bother

the fact is that impact factors are much more than just actually this the EMG could. Because it contains resonances with some devices, certain frequencies, and has not only direct impact but also indirect, which these devices can not be measured. Well, or something very indirectly... i.e. the information component can change the space around and / or to create biological component of the radiation, which is simply not filtered.
A simple example. Imagine the volume of which is noise filled with water and it is structured under the influence of this information from noise. Moreover, the noise is actually not noise, but just a lot of different factors, formed together (as if in the crowd, each shouting their own, but you can hear him scream).
So, water will penetrate everywhere carrying structure obtained up to the elements the absorption of smog.
In the usual case (when we are not under water), screening is also not enough, you need to create inside conditions favorable for the energy-information climate. And if they create, it is possible and shielding will not be as important.