Maybe the lower frequency of the turbines is more of an issue than the other background noise we deal with daily. I’d like to see other studies back this one up before making any judgment. I usually don’t blindly trust a single study – hopefully, if this is a problem, another study that backs this up is done shortly.

Importantly, the frequencies that are being discussed are much lower than those made by passing trains. I think the issue at hand is that of infrasonic sound waves, which are at a very low frequency. Continuing, it is said that animals have an innate ability to hear or detect infrasonic waves, which we can’t detect, at least not consciously. In fact, many speculate that the common ‘ability’ of animals to detect coming natural disasters very quickly such as earthquakes, large wave events, mudslides, hurricanes, tornadoes, etc, is due to this ability, as it is said that often infrasonic waves accompany such events.

You can wiki infrasonic waves, or infrasound (http://en.wikipedia.org/wiki/Infrasound). Also what is interesting, is that for the US Express, or Cannonball Run, or Gumball 3000, someone had installed an infrasonic wave generator on their car. Someone else mentioned that it was some sort of high powered mil-spec “radar jammer.”

However, a lot of the speculation about human responses to infrasonic sound is mixed. Many believe that exposure to infrasonic waves lead to a sense of uneasiness, depression, anxiety, etc, in humans, even though we cannot consciously hear or detect them. Others feel that this is all bruhaha.

My two cents (man, it’s been a while since I’ve posted here). My belated birthday congrats, it’s being a cool 2 years reading your work!

That low frequency sound stuff is such rubbish. I live about a quarter mile or less from some train tracks that freight trains use several times a day. We get some pretty serious rumble going on in my neighborhood, and nothing bad has happened. Granted, these noises aren’t going on 24/7, but as Deven mentions, we are already exposed to all sorts of noise pollution. People are just looking for any way they can to slam wind turbines.