Thanks again for the thoughts..
Cherokee Solar wrote:Anyway, the point is that you could clearly hear the vibrations from aircraft taking off at Melbourne airport about 30km away.
I do wonder if the lady that I heard on the radio, crying in pain, would agree that your thought was very relevant to her problem..
I have slept in London, and felt every train, deep underground.. I wake at night, sometimes, because the earth "Moved-for-me".. The gusty wind came up and the house moved.
I wonder if the idea with these issues is that the "Badies" know there might be an issue and so "Ghost Write" various wild claims that can be seen to be bloody stupid, and create a haze that obscures the real issue. eg. Bird Strike -- I do HATE this being brought up all the time as proof that there is NO problem..
Now I recall an interesting early TV piece, with this fool describing how XRay's work and clearly said that these wondrous things will improve our lives and they are good for you.
Subsequently, there are many findings that XRay's cause Cancer, and more Xray's cause more cancer, and manufacturers are improving the technology in two directions.. to produce models with lower radiation, in subtle recognition that less is best, and then, building other models, that have dramatically more radiation, because it gives a better image... ie.. Industry will build and develop ANYTHING that makes money.http://reneweconomy.com.au/2013/infrasound-report-wind-turbine-syndrome-is-everywhere-and-nowhere-10437#sthash.wHVrdExU.dpuf
Probably the best read of the material around, but what does it really say...
To me, it says that their finding is that there is MORE noise found in the city, and thus I should be sicker that those complaining.. Fair cop, assuming the tests are fair..
From an overall perspective, measured G-weighted infrasound levels at rural locations both near to and away from wind farms were no higher than infrasound levels measured at the urban locations. Furthermore, both outdoor and indoor infrasound levels were typically below the perception threshold by a significant margin.
Pretty convincing - They have done their homework and tests..
Due to the typical levels of sound at these frequencies in the environment, infrasound is commonly thought of as occurring below the limit of the audible range of frequencies.
However, sound at frequencies below 20Hz can be perceived by humans as long as the level is high enough (Leventhall, 2006), with hearing thresholds determined down to frequencies as low as 2Hz (Watanabe &Møller, 1990).
So, the basis of testing for NUISANCE sound, is a suggestion that 20Hz is a typical magic number for HEARING.. and that Feeling Sound can be down to 2Hz..
I wonder what the frequency is for biological reaction is.. ( Just Curious..
As an older engineer who has forgotten more than he cares to remember, I see a test, measuring the "Perceived" effect on HEARING, using a "G" weighted factor..
But- The people are not complaining of hearing the cause.. They are FEELING it.. They CLAIM that they wake at night to a FEELING and the pain, and find the wind has come up and the turbines are spinning..
THEY FELT it before they heard it.. In fact the White-Noise from the wind, masked the sound of the wind farm.. but they claim that they felt it..
So, the "Feeling" end of the infra-sound spectrum is attenuated 40 to 80dB.. That is "IF" the human body can FEEL sound..
Now, to ME, that is one good way of proving complainants to be fools and wackos..
Just change the measurements, on the basis of a claim as to what can be detected by the body..
Now, don't get me wrong.. I am presenting what I have heard from VERY reasonable and honest sounding people, who MAY be scheming bastards, jealous of their neighbours..
Sheep and cattle are D.U.M.B. and will happily graze under the spinning blades, but I am sure I saw a "WTG friendly" farmer saying that Still-Births amongst his stock was very high... Hmmmmm !
Just as I know that XRay's can ultimately kill you, and Radiation as a cure for cancer, causes cancer years later, MY mind is still open on Infra-Sound ..!
.. I would love to see the pure measurements..