Posted by
R. Ticle on
URL: https://www.es-forum.com/Infrasound-detector-does-it-exist-tp1548441p1548455.html
Thank you Charles,
I will have a look at those. In the meantime, I also found this:
http://www.scantekinc.com/frequency.htm(Scroll down to the meter named "NA-18")
R.
--- In
[hidden email], "charles" <charles@...> wrote:
>
> You have to scroll down to the bottom of the page.
>
>
> Waves around 100 kHz are far beyond the hearing possibilities.
> And they are not regarded as infrasound.
> Infrasound is between 0 Hz and 20 Hz.
>
> And one has to distinguish between sound and vibrations.
>
> And both can be measured easily with what I have written in *het bitje*.
>
> Greetings,
> Charles Claessens
> member Verband Baubiologie
> www.milieuziektes.nl
> www.milieuziektes.be
> www.hetbitje.nl
> checked by Bitdefender
>
>
>
> ----- Original Message -----
> From: "Bill Bruno" <wbruno@...>
> To: <
[hidden email]>
> Sent: Friday, February 20, 2009 12:36 AM
> Subject: Re: [eSens] Infrasound detector - does it exist?
>
>
> > Thanks Charles but I don't see any September 2008 issue at that link.
> >
> > One theory I heard from A. Firstenberg is that the hum is caused
> > by LORAN-C, an-obsolete but still operating navigational system
> > that I think operates with electromagnetic waves around 100kHz.
> >
> > I have heard of infra-sound detectors. I think I saw instructions on
> > how to make one. Basically a special microphone, but you also need
> > equipment to analyze the output (or send to your computer?). I think
> > it's possible some ventilation systems can vibrate through a whole
city.
> > Look up "Taos hum" and you'll find some experiments, but not quite
> > conclusive if I recall.
> >
> > Refrigerators and things like that can also be a factor. Putting
> > industrial
> > rubber dampers under the feet might help. Although I often
experience
> > such
> > a phenomenon with the fridge off, and our house is on a big lot.
Wind
> > over
> > vent pipes I think is also considered a possibility.
> >
> > Wish I knew...
> > Bill
> >
> > On Thu, Feb 19, 2009 at 3:25 PM, charles <charles@...> wrote:
> >
> >> Read the two September 2008 issues of *het bitje*.
> >>
> >>
http://www.milieuziektes.nl/Pagina10.html> >>
> >> Look also for the Humsimulator at:
> >>
http://www.milieuziektes.nl/Pagina114d.html> >>
> >> Greetings,
> >> Charles Claessens
> >> member Verband Baubiologie
> >> www.milieuziektes.nl
> >> www.milieuziektes.be
> >> www.hetbitje.nl
> >> checked by Bitdefender
> >>
> >>
> >> ----- Original Message -----
> >> From: "rticleone" <rticleone@... <rticleone%40yahoo.ca>>
> >> To: <
[hidden email] <eSens%40yahoogroups.com>>
> >> Sent: Thursday, February 19, 2009 10:26 PM
> >> Subject: [eSens] Infrasound detector - does it exist?
> >>
> >> > Some of you might remember that I posted a message some time
ago about
> >> > my mother who hears "the hum" (at least that's what we think it
is),
> >> > and experiences symptoms such as, hearing it, feeling a vibration,
> >> > agitation, fatigue, etc...
> >> >
> >> > Infrasound was suggested as something to look up. It's been a while
> >> > since I did - I can say we don't live remotely within the
vicinity of
> >> > wind turbines, and she can hear and feel it in our house (and
certain
> >> > other places, but not ever place, so she's obviously very
sensitive to
> >> > it) even with the power shut off. We have no TETRA or anything
like
> >> > that.
> >> >
> >> > I also wonder(ed) if, even though I don't notice it like she does,
> >> > being in an environment where it's present could add to the
negative
> >> > things I experience.
> >> >
> >> > So - it leads me to ask: is there such a thing as an infrasound
> >> > detector? (Other than a sensitive human being)
> >> >
> >> > Thanking you!
> >> >
> >> > R.
> >> >
> >> >
> >> >
> >> > ------------------------------------
> >> >
> >> > Yahoo! Groups Links
> >> >
> >> >
> >> >
> >> >
> >>
> >>
> >>
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>