WANT TO READ
THE SCIENCE OF THE
1. What is the
sound heard by between 2-11% of the population mainly at night,
mainly indoors and in mainly industrialised countries, although a
similar thing has been heard due to volcanic action in Hawaii. Hearing
maximises in the 50-60 age groups but the author is Aware of people as young as
24 and as old as 78 who presently hear the
2. What does the
Any description of a sound or noise has, by definition, to be purely subjective. Those who hear it describe it as like a throbbing diesel engine or a distant fly, bee or wasp trapped in a bottle. Sometimes the sound is perceived as though it is just behind one ear. Sometimes physical vibrations can be perceived as well, particularly if lying in bed. Sometimes the pattern heard is more complex and may sound almost like music, Morse code or digital code. Sometimes the patterns speed up and slow down other times they are constant. Sometimes the noise sounds more ‘digital’ like ‘phuts’ with a very fast rise time.
3. What causes
The author’s presently held Scientific opinion is
* The classic proven case of this was at
Produce the Hum at certain locations. # If you want to know if you are magnetically sensitive, try standing underneath high voltage pylons with your fingers poked firmly in your ears to cut off all external sound and see what happens, there should be a direction effect if you are .
4. How come I just started hearing the
It could be
your age. The author’s
hypothesis is that as our high frequency hearing sensitivity starts to fall off
with age our low frequency sensitivity boost up to compensate for it . It
could be you just moved house to a location which has the right frequency
components for the
It could be a new factory,
industry or power plant has opened up added a
frequency component needed for the
that most cases of the
5. Why do I only
At night it
is generally quiet there is less masking noise. There is less vehicular
movement to ‘stir up’ the
6. Why do I
only hear the
Your house acts like a giant acoustic sounding box. Double glazing and cavity walls actually make matters worse! Cavity walls may conduct ground borne vibrations such as those from idling trains, hydropower, wind turbines etc. and radiate them as infrasound and sound. Double glazing blocks off high frequency sounds but is next to useless below 150Hz.
Piezo electricity in brick can also radiate mains hum as a weak acoustic sound.
7. Why don’t ear plugs work very well?
Ear plugs offer very little attenuation at low sound frequencies. Wax offers far more attenuation than foam at low frequency.
Natural masking noises the wind and waves or recordings thereof are much better. Also you might find a combination of ear plug and radio frequency screening material better.
8. Why does the
effects the way sound and infrasound moves through the atmosphere. If any of
9. We had two
feet of lying snow and the
This is a
more difficult one. Either your
Do some geographies favour the
Hydroelectric power plants which could provide ground vibrations.
In coastal regions infrasound can also be
generated naturally e.g. booming sand dunes but also from oil drilling, seismic
exploration and wind farms. There is often more railway (rail-road)
activity too. Idling diesel engines in sidings are a big problem in the
I still hear the
These are only good down to about 150 Hz. The
frequencies that cause the
I stopped hearing the
It sounds like one of your
I hear the
You don’t say whether there are street
lights. This is a very hard question to answer anyhow but could be due to
synthesesia ( the brain handling duelled sensory
input). If your
the other hand you are looking at street lights there may be modulation of the
light intensity by ground vibration or mains fluctuation. If your
I hear the
This might be due to more speckle as in the answer above or it could be due to the effect on tide and tilt altering your local seismic propagation. ( The way ground vibrations move is altered by the moon)
Also the Hum seems to depend on planetary cycles suggesting a complex interplay of natural and anthropogenic ( people made) processes.
Surface seismic waves propagate or move
through the earth differently according to how much stress is in the earth’s
crust. There harmonic content is also different. Waves from hydro-power
plants are susceptible to this and travel hundreds or even thousands of
Can I get relief from the
could move house but this drastic measure doesn’t always work. You could
emigrate but as more of the World becomes industrialised there are fewer and
LAST UPDATED NOVEMBER 25TH 2016.