Seriously, it is important to every one should have personal Jammer like Sonic Attack in Cuba, Like using hearing devices to stealing others information.
I heard and have a problem with it. Sonic can be detected. Even if it is above or below human hearing it can be detected with ease. If it had been detected, then it could also be located through triangulation. We would have pictures of the building it was in at a minimum.
So unless we believe that Cuba, so behind the technological times that they make brake pads in alleys out of asbestos because they can't get the parts for their cars is so advanced they have a secret weapon that is undetectable we have to look at alternatives.
The simplest and most probable is a toxic compound in the air or water. If it is the air, your personal jammer is an air mask in addition to the aluminum foil hat. Something that can filter even toxic compounds which is easily available.
If you are talking radio waves and are serious if ignorant then a Faraday Cage is your answer. No radio waves can get in. Here is how to test if your cage is working. Put a radio playing a local station in the cage. Close the door. If the radio still works, the cage has a flaw.
Myth busters did the testing on the "Brown Note" and you can watch it with ease. That was a test to see if a sonic note could make someone crap themselves.
So ask yourself why the most technologically advanced nation is unable to locate a sonic signal in Cuba? I mean we have Wi Fi in our Toasters for the love of all that is good. Amazon sells detection devices for electronic signals. But we can't seem to find this high tech attack.
Put your foil hat on. It will protect you.