ANOTHER GUESS WOULD BE "THE HUM"
The Hum is a generic name for a series of phenomena involving a persistent and invasive low-frequency humming noise not audible to all people. Hums
have been reported in various geographical locations. In some cases a source has been located. A Hum on the Big Island of Hawaii, typically related to
volcanic action, is heard in locations dozens of miles apart. The Hum is most often described as sounding somewhat like a distant idling diesel
engine. Typically, the Hum is difficult to detect with microphones, and its source and nature are hard to localize.
There are several theories under "The Hum" that may explain this phenomenon
#1. Colliding ocean waves
Researchers from the USArray Earthscope have tracked down a series of infrasonic humming noises produced by waves crashing together and thence into
the ocean floor, off the North-West coast of the USA. Potentially, sound from these collisions could travel to many parts of the globe.
#2. Spontaneous otoacoustic emissions
Human ears generate their own noises, called spontaneous otoacoustic emissions, which about 30% of people hear. The people that hear these sounds
typically hear a faint buzzing or ringing, especially if they are otherwise in complete silence, but most people don't notice them at all.
Generated by the body, the auditory or the nervous system, with no external stimulus. However, the theory that the Hum is actually tinnitus fails to
explain why the Hum can be heard only at certain geographical locations, to the degree those reports are accurate. There may exist individual
differences as to the threshold of perception of acoustic or non-acoustic stimuli, or other normal individual variations that could contribute to the
perception of the Hum by some people in the population and not by others.
While the Hum is hypothesized to be a form of low frequency tinnitus such as the venous hum, some sufferers claim it is not internal, being worse
inside their homes than outside. However, others insist that it is equally bad indoors and outdoors. More mystery is added as some notice the Hum only
at home, while others hear it everywhere they go. Some reports indicate that it is made worse by attempted soundproofing (e.g., double glazing), which
serves only to decrease other environmental noise, thus making the Hum more apparent. Tinnitus is also generally worse in places with less exterior
People who both suffer from tinnitus and hear the Hum describe them as qualitatively different, and many hum sufferers can find locations where they
do not hear the hum at all. An investigation by a team of scientists in Taos dismissed the possibility that the Hum was tinnitus as highly
In the case of Kokomo, Indiana, a city with heavy industries, the source of the hum was thought to have been traced to two sources. The first was a
pair of fans in a cooling tower at the local DaimlerChrysler casting plant emitting a 36 Hz tone. The second was an air compressor intake at the
Haynes International plant emitting a 10 Hz tone.
7 trumpets of revelations (Bible prophecy)
Government made alien UFO technology blasting these noises from the sky
edit on 26-1-2012 by RockerFeller because: (no reason given)