Tinnitus caused by PC monitor
Starman
I think that my high-frequency tinnitus in booth ears
is probably caused by the magnetic radiation of computer
monitors which can easily be detected by means of
an oscilloscope and a coil, inspite of the MPR/2 standard.
Long working hours in front of the monitor have considerably
increased the sound of about 15 KHz I am hearing. Who
can tell about similar experiences or can advise on possible
magnetic screening? Is an LCD monitor or a notebook
the only solution?
Thomas
---
email: Sta...@t-online.de
www: http://ourworld.compuserve.com/homepages/Starman_1
David Lindholm
I would like to hear more on this subject myself. I work in the computer
industry and I am in front of a computer monitor all day. If this is
contributing to my "T" I would like to know. If this is the case, what
defense against it can a person take. Earplugs?
David
scion
I'm using silicon earplugs while using 17'' monitor in my PC.
I don't know, whether it is the monitor or the fan of the power
supply of the PC, but the noise irritates me. I have both a low
and a high frequency tinnitus. If the electro-magnetic radiation
caused or made worse tinnitus, we would have an immense risk
with electrical devices (fluorescent lamps, microwave ovens, TV:s,
mobile telephones etc.). I use earplugs whenever I feel uncomfortable
about the noise.
Vesa
TONYJEFFS
Sta...@t-online.de (Starman) writes:
>I think that my high-frequency tinnitus in booth ears
>is probably caused by the magnetic radiation of computer
>monitors which can easily be detected by means of
>an oscilloscope and a coil, inspite of the MPR/2 standard.
>Long working hours in front of the monitor have considerably
>increased the sound of about 15 KHz I am hearing. Who
>can tell about similar experiences or can advise on possible
>magnetic screening? Is an LCD monitor or a notebook
>the only solution?
>
>Thomas
I find I have a problem with most televisions, and some older PC monitors.
I think it's the actual high frequency noise that's the problem for me,
rather than the magnetic field, with the tube acting as a sounding board
for the oscillators, although your theory is interesting,and worth
investgating further.
This wasn't the cause of my t, but it does aggravate it if I'm not
careful. . If there is something I want to watch on tv, I generally wear
ear plugs. I usually wear plugs when I'm on this PC for a long stretch as
well, although I'm not sure if I'm being overly cautious, here.
I think a laptop would be an answer, but I've never worked with one. (I'd
have thought that a decent large sized high definition flat screen would
have been available years ago. Can't be far off now.)
Still, at least it stops me watching too much television.
A makeshift way of detecting the electromagnetic feild, if proper
equipment isn't available, is to use a medium wave a/m portable radio as a
sensor. You can compare the range and frequency of emissions from the pc
with the equivalent from the TV set and the microwave.
Tony
amdata
TONYJEFFS wrote:
> >I think that my high-frequency tinnitus in booth ears
> >is probably caused by the magnetic radiation of computer
> >monitors
It is interesting to note that some critters evidently have magnetic
particles in their ear complexes...thought to be for geo-magnetic
orientation (as in homing-pigeon). Your idea that TV sweep frequencies
could be perceived as magnetic fields could use something of this sort as
a very sensitive otological coupling mechanism.
Although electronics are made to increasingly tough standards regarding
undesirable emissions, no followup process assures these standards
remain effective. Shock, vibration, thermal flexing and component
degradation can cause your ordinary desktop monitor to radiate all
sorts of undesirable things, including x-rays and high sound levels.
Magnetic fields will not change very much, but sound levels radiated at
15Khz and higher sweep frequencies and 20 khz and higher switching power
supply frequencies can approach rock concert levels as the related
transformers gradually tear themselves apart from the inside out.
Relatively high power levels drive these devices, and the fabrication
materials are such that they can evolve into highly efficient sound
radiators as they age.
--
ESB
Tom Warner
In article <3210CB...@el-dorado.ca.us>,
amdata <amd...@el-dorado.ca.us> wrote:
>Magnetic fields will not change very much, but sound levels radiated at
>15Khz and higher sweep frequencies and 20 khz and higher switching power
>supply frequencies can approach rock concert levels as the related
>transformers gradually tear themselves apart from the inside out.
>Relatively high power levels drive these devices, and the fabrication
>materials are such that they can evolve into highly efficient sound
>radiators as they age.
Any practical suggestions for attenuatting these high freq sounds??
TIA
Tom
amdata
Tom Warner wrote:
>
> Any practical suggestions for attenuatting these high freq sounds??
Soundproofing..so long as it doesn't cut off cooling. Baffles. Longer
arms. Detect and dispose of or repair faulty equipment. Use a laptop.
--
ESB
giom...@gmail.com
What type of screen do I need to resolve this M"F" beep.
jtmpreno
> Yes, I Have the same problem, never expected someone else to have this, but ever since I bought my new VA-lighted monitor I'm having trouble with tinnitus. Still didn't buy a new one cause I was never sure that it really was my screen and I have the exact same 15khz pitch in my head that seems to get worse while being behind this screen.
>
> What type of screen do I need to resolve this M"F" beep.
>
The reason is that the High Voltage power supply operates at an
ultrasonic frequency.
An LCD display that uses a fluorescent backlight can also do it for the
same reason. It uses a switching power supply.
The safest monitor for me is an LCD monitor with an LED backlight.
However, I still have a problem with the power supplies in desktop PCs.
They are switching power supplies and vent to the outside.
I have to wear hearing protectors when using my desktop PC.
The best computer for me is a laptop. The power supply is external and
is sealed.
For the link between ultrasonics and tinnitus see:
https://www.bshaa.com/News/invisible-ultrasound-can-be-a-cause-of-tinnitus
Your new monitor is probably LCD with an LED backlight but it also uses
a switching power supply. It is possible that the switching power supply
is inside the monitor and is open to the outside (the back).
An LCD monitor with LED backlight that uses an *external* sealed power
supply should be the answer.
jtmpreno
clean your teeth. Make them do it manually.
Unless you have dentures and can be out of the room when they clean them.
I have a friend with dentures.
I told her, "Your teeth are like stars. They come out at night."