Before anybody asks - I ain't sayin' nothin' (as in anything). Well........... except maybe; save some money, forget the new windows.
On Apr 4, 9:26 pm, "R.D." <[email protected]> wrote: > Just saw this, could explain things? I live more or less at sea level in an > old growth forest about 100 years old trees more or less. The soil is sand > and clay with lots of that iron sand leached deposits. The iron content could > be creating a field effect I guess. It's away from roads and highways and > railways, and no pipe lines within a few miles. So not sure if its the lack > of noise that can allow the hum to be noticed or it's just part of the > environment. Mostly noticed inside the brick house. I am going to install low > e windows with sound proofing on the now open porch to see if it has any > effect. Will let you know. > > FYI > > Quietest place on Earth mutes all sounds, messes with your head > By Tecca > > (Credit: Orfield Laboratories) > > NASA heads to a lab in Minnesota to put astronauts through acoustic torture > tests > > By Mike Wehner, Tecca > > If you've been to a crowded airport, sporting event, or even a kid's birthday > party lately, a little peace and quiet might sound like the perfect thing to > help you kick back and relax. Just don't let things get too quiet, or you > might drive yourself a wee bit insane: the anechoic chamber at Orfield > Laboratories in Minnesota can mute 99.99% of all sound, but visiting the > silent oasis isn't as calming as you might expect. > > The room holds the current Guinness World Record as the quietest place on the > planet, and companies from all over the world seek out its unique acoustic > properties. The walls of the chamber are lined with sound-absorbing baffles > that can capture noise and mute it in an instant. This allows companies — > both Whirlpool and Harley-Davidson have visited — to test just how noisy > their products are without the risk of outside interference. > > But while the super-silent oasis is a great testbed for various products, it > holds a darker side: silence, it turns out, can put a great strain on the > human brain. Researchers at NASA test the room's unique acoustic capabilities > on humans rather than hardware. The noiselessness is used to simulate the > silence of space — an environment astronauts would be well served to grow > accustomed to. > > What they've found is that when all outside noise is removed from an > enclosure, human hearing will do its best to find something to listen to. In > a room where almost 100% of sound is muted, people begin to hear things like > their own heartbeat at a greatly amplified volume. As the minutes tick by in > absolute quiet, the human mind begins to lose its grip, causing test subjects > to hallucinate. > > NASA then monitors how the would-be space explorers react, and whether they > can get past the very obvious awkwardness of seeing or hearing things that > aren't actually there. According to lab officials, the longest anyone has > lasted is 45 minutes before being allowed to hear the sweet sounds of planet > Earth once again. > > In the end, the chamber has proven a valuable scientific tool, just don't > plan on renting it for some peace and quiet — it may do more harm than good. -- You received this message because you are subscribed to the Google Groups "Hum Sufferers" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/hum-sufferers?hl=en.
