Sound protection survival life gas in oil pan


We begin to feel physical pain at 140 DB and can tolerate it for less than a second. The movie “Under Siege” shows an actor standing near an 8” battleship gun when it is goes off. The concussion from that explosion knocks the actor off his feet (simulated in the movie, of course). A scene in the movie “Lucy” shows the title character making a shrill sound so loud and penetrating it takes down all the other humans in a hallway. These kinds of sights precondition us to know what is possible.

Duration of exposure to sound pressure is serious. You should be aware of the effects loud sounds can make on your body. There are essentially three ways to protect yourself from loud sounds—increase the distance between you and the sound source, find a way to block the sound pressure waves, or find ways to absorb or attenuate the sound. (A fourth method is to stop the sound from being generated by the threat.) Since you may not be able to increase distance, sound blocking and sound absorption are your standard choices for handling loud sounds.

Naturally you want to prevent undesirable sound energy from getting into your home or shelter. You do this by blocking direct air pathways and by placing obstacles in the way to break up sound waves. Everything around you should be considered including where you locate your house.

The earth is a great resource for blocking sound. Homes constructed in quiet valleys or depressions are natural choices as are earth berms that cover part or all of a home. If you’ve ever entered a cave or mine, you know how fast outside sounds disappear.

Airport runways have sonic walls that reflect the sounds of jet engines away from people working in the area. A sound blocking wall is also used on aircraft carriers during the launching of jet planes. You can adopt similar designs to block as much sound before the energy gets to the exterior of your home. Figure 4 shows all-weather sound panels.

Exterior or interior acoustic blankets and walls can reduce sound by over 40 decibels. Interior panels can absorb 85% of noise trying to pass through wall material. A thick mineral fiber material can block 100% of all sound depending on the frequency. Sound-Proofing Your Home

Take steps to seal openings where sound can enter your home. Anyplace where air can get in is a path for sound waves. Consider insulation, gaskets, caulking, and even draft catchers. Stop the sounds at the perimeter to your home before they can penetrate your living space. There are products that can help. Table 3 shows sound blocking products currently on the market.

The sound protection methods described in this article can work well as long as you aren’t exposed to a high intensity sonic weapon that can penetrate walls and destroy materials and flesh. Should you use such a weapon, your only recourse is to quickly bug out to increase the distance between you and the source before being exposed. Remember, low frequency sound has a long range reach. If you can’t get away, God help you, since there is no earthly protection against low frequency, high intensity sonic weapons. And they exist.

Sound can heal. Sound can harm. And sound can kill. It depends on the pressure wave and who controls the sound generator. We’d all like sound to be used to do good. However, there are groups who would use sound to force their own agendas. They present a risk to the rest of us. As you prepare, be ever vigilant, and become the most informed you can be. Knowledge can be your best survival tool.