On Dec 24, 6:39*am, "Arie" wrote:
Don Pearce wrote in messagenews:4953186d.528987093@localhost...
On Wed, 24 Dec 2008 11:07:26 -0000, "TonyL"
wrote:

geoff wrote:

It is known as The Hum, and there are all sorts of conspiracy
theories about it, from weapons research, government mind-control
beams, aliens, phantom planets, the Sun getting ready to implode,
electrical feilds, HARRP, gravity waves, etc, etc, etc. *Most
adherents to those ideas radically HATE the idea of something as
mundane as (LF) tinnitus.

You obviously have you mind made up about whatever it was that you were
hearing and that everyone who differs must be a raving nutcase. But....

I had The Hum for years when I lived near Wolverhampton. An LF pulsing
sound
that sounded like a large truck parked with its engine running. It started
soon after a large gas main was installed nearby and I could "hear" it in
and close to our house, especially at night. It sounded so real that I
would
wonder around the house looking for the source. Nobody else could hear it.

I'm not sure it was tinnitus because I only ever heard it in/around the
house. It was so location specific. I recall pulling up onto our drive
after
a completely hum-free holiday and turning off the car
engine....immediately
I could hear The Hum. Since we have been living in Wales for the last 9
years I have never heard it.

I don't know what it is but I would not dismiss it out of hand as LF
tinnitus.

Ever try recording it? That would have settled the matter once and for
all.

And in that case - try recording it on a laptop, with a widely separated set
of stereo mikes. Turn the set in different directions and look at the phase
relation - should indicate direction.

I found a "humming source" that way (transformer house with a resonating
wall). I used a program to display the live stereo phase vector (AFAIR
Cooledit 2000).

Regards,
Arie de Muijnck

When I was a kid I noticed a wierd hum when I was near our
refrigerator.
Further exploration revealed that it was actually only when my ear
rubbed against the refrigerator handle. Further investigation of this
hum revealed that it was actually creating a very tiny electrical
buzzing and stinging sensation at the point of contact with my ear.

The refrigerator was grounded but by way of a considerable
length of romex and apparently a small voltage was
induced in the ground wire over the length.

In essence, the run of romex was acting like a badly
designed air core transformer and creating a low voltage
induced potential on the ground.
It was noticeable between a pipe ground and the refrigerator
but only by using the sensitivity of a human ear.

I'm sure I'm not the only very nearsighted person
who has noticed that under certain accidental
back lighting circumstances floaters on the
surface of the eye closely resemble images
you would see only under a low power
microscope.

Somehow science is more interesting in the ragged margins.