MY FAMILY CAN'T SLEEP DUE TO ULTRASONIC SOUND

Who?

Dirk

(snip)

Why do you all persist in feeding this poor soul?

IMHO there are times for swordsmanship, and other times for silence.

Well, A) you're clearly not healthy - YOU CAN'T SLEEP!!!! So, go to the doctor, and see if he really says that, and if so, then find an acoustics specialist. I'd almost bet money that he'd do some kind of examination, and possibly refer you to a specialist, but any doctor worth his license won't blow you off.

But until you go see a doctor about your insomnia, you're sounding increasingly like a paranoid lunatic.

Good Luck! Rich

Hey, there ya go! Call HomeSec - they'll get to the bottom of it!

Good Luck! Rich

Evidently, Confusion. ;-P

Cheers! Rich

Then find the transducer, since inside your apartment is the only place it can be - ultrasonic doesn't go through walls, to any measurable degree.

Good Luck! Rich

Or, you could say, "I get paid for it." That's the definition of "a professional", after all, isn't it? ;-)

Cheers! Rich

Ya.. did you measure it with ANY raster device turned on? TV? Computer monitor? In the same room? How about adjecent rooms? Neighbors?

An audio amplifier I built shows a goodly amount of 80kHz noise, in the form of single-cycle sine wave pulses, particularly when I touch the input (putting bodily noise into the amplifier), and especially when my other hand is touching my monitor's screen.

Is there ultrasonic noise going to my speaker? S*it yeah! Is it going through the air? Probably not! Can I hear it? F*ck no!

Tim

-- Deep Fryer: a very philosophical monk. Website:

John Fields schrieb:

Did anyone look at the attic of the house? Here in Austria we have small bats, living in the trees, in caves and also in dark places where they can hide. They are nearly blind, but they navigate using ultrasonic sounds. We can hear parts of their sound spectrum. This non-threatening animals are active very often in the evening, mostly in the summer. Maybe some of this creatures have got lost in your house.

Roman Bumerl-Lexa Embedded Systems and Software design

The practice of writing paranoid theories on the Internet is spreading throughout.

Hey, I've suddenly realised what you meant by "warm nights" that stopped after you put aluminium foil on the ceiling. You think that the

Fred Bloggs escreveu:

Even though I agree it is a troll, a high power ultrasonic source can give you very quickly a terrible headache and the noise is horrible. Have you ever been near to an ultrasonic textile cutting machine? it operates at over 30kHz and you can hear it very well and the operators are required to use protective ear equip... Of course, these things have power in the kW range...

Ricardo

What kind of circuit do you design? Diode radio? If you think this is not real stay away from my post. I mean get lost

Tech

It is not mentioned in the phone book but I was able to find an FBI number where they answer the phone by saying a name as if it is a private number.

There are no bats on the roof here in the USA especially when the temperature is in single digits of Fharehights. This hearing is scientifically called as "ultrasonic hearing" and above 50kHz. This device they are using to cause sleep deprivation is about 100kHz and heard by the cochlea through the skull or bone.

There are US patents for these type of harassment devices.

No. This is not paranoia. There are US patented devices that can cause sleep deprivation.

There is a device, which can increase the temperature of the body to cause sleep deprivation.

Both tenants were using microwave. When we got the previous tenant out, the interference on the TV, CRT Monitor all disappeared and we were to able to sleep well during vacant tenancy. This is how started suspecting of covert activity to cause sleep deprivation. We got the new tenant and the problem happened after two months of tenancy and noticed some unusual behavior on the new tenant's part.

Well, when you know that there is such a thing as ultrasonic hearing, why do you consider this as a troll ?

The frequency of this sleep derivation device is close to 100 KHz

Tech

It does and that's how in NASA they inspect assembled Payloads such as Satellites for corrosion or loose-contacts after partial assembly.

Yeah. Money could fly above eagle in the USA. No wonder these tenants get rich by doing it so and buy new cars fully paid despit bad credits

How did you measure that?

Sounds like the brady bunch episode where the kids gets the medical diagnosis manual and decides he's come down with a rare tropical disease