Yours is an interesting case in that you live in a relatively remote region lacking any major infrastructure except for local power lines. The closest large urban center is around 200 miles away. You live in or on the edge of a tremendously large basin that is nearly flat or has a slope of around 1 percent at most. This covers hundreds of square miles. The groundwater is trapped and percolates very little. The creeks and rivers extend for miles with many branches. If the hum is propagating or originates there, it would be nearly impossible to shield against. Also, I a few weeks ago I had asked if any hum sufferers were electrosensitive. I was hoping that I could get an idea of what types of shielding people were using because shielding might actually work against you. If the hum is
electrical, shielding would trap,
reflect and concentrate the effect if placed on the wrong wall. This is especially true of microwave frequencies. If the hum is acoustical, once again, shielding might actually make your hum worse. You actually live in a best case scenario for testing to detect the source of the hum. To maintain your privacy and my objectivity, I will not ask your exact address. However, it would help if you could at least provide a specific town, county or intersection of roadways withing a few miles of your location. With that I can get a rough elevation and compare if the hum might be reflecting off of a nearby ridge or basin. If you can get a good direction, it would save us all a lot of time and trouble. Try a simple experiment. Take an umbrella in the room of the house where you hear it most often or stronger. Open the umbrella and hold it such that the handle rests on your shoulder and the umbrella itself is behind your head. Test various
when all is quiet except for the the hum. Test for the hum when it is worse. Test in front of windows or go outside and repeat the test. See if you can get a direction. This would tell us whether it might be acoustical. If electrical, it would be a reverse direction. In other words, the umbrella would capture acoustical but shield electrical in the opposite direction. Repeat the test with various types of shoes or by standing on a rubber shower mat. You might find something important. Another experiment is the listening stick. Many mechanics use a simple wooden stick to listen to engine noises. I take a wooden broom handle about a meter in length. You place the rounded end of the stick against you ear opening, plug your other ear with a fingertip, and touch the stick against a wall, ceiling, fence, tree or other object and listen. See if you can feel any vibrations. Others can try this also. I suspect that the hum is coming from
the direction of the center of the basin where all of the farms exist but there might be an acoustical reflection from the gravel ridge you live on. Especially look to the northeast towards the distant large lake. Regarding an increase during rain storms, read part one of my hypothesis that I will post later today. Mark S. Jordan zorbasci@...
From: "xyzxyz12311@..." <xyzxyz12311@...>
Sent: Wednesday, November 21, 2012 9:46 PM
Subject: HUM_FORUM: Re:
Preface To The Hypothesis
I read your hypothesis a few days ago and re read it now and
am starting to appreciate it, you may have the answer, thanks
for the hard work :-)
I was remembering several years ago that many members were saying
that a rain storm increased the hum. I was searching messages
and number 584 has some interesting things to say.
I have tried to shield my bedroom with aluminum foil on 3 walls
and grounding it and it did work for a while but I got resenstised
or else maybe the hum was coming back on anyway, I did some thinking
about how to shield the floor without any good ideas.
I did put aluminum foil under the mattress and noticed that cut down
the hum to the point where it would go off and on during the night.
About 2 weeks ago my hum was low enough that I could sleep but during
the last week it has been bad.
Did anyone on the east coast notice if the hum went off when the
power was off??
--- In mailto:humforum%40yahoogroups.com, Mark Jordan <zorbasci@...> wrote:
> Hi to all,
> This is a hypothesis that I present for discussion only. I do not intend to produce a scientific paper on this subject. I will only