Hi Trev, Thanks for replying.
What I hear varies. It's often a regular hum of relatively short duration, i.e. a second or so with a similar silent gap. However, on occasion the hum can last for 10-15 seconds or possibly more. We saw this last night on the freqency analyser. The meter would show a response when I told the person operating it that I could hear the noise. I'm not sure of the scale, but there was activity possibly from 12.5Hz up to 50Hz. I'm not sure if they have stored the results or not. It wasn't an ideal time as it was around 9-10pm and my neighbours were listening to the TV fairly loudly. I've been told that my hearing's pretty good;). Not sure if it's worth insuring though. I wouldn't mind not hearing this noise and then I could get some sleep;)! Cheers, jahman On Apr 11, 3:10 pm, Trev <[email protected]> wrote: > Hi Jahman- > Excellent news to read.- that you have effective back up! > Your site is a very old established Hum site and if you have got > measurements and independent witnesses- that is remarkable. > 12.5 Hz is in the Earths' Schumann resonance band and would not be > hearable. > What you did hear , however, would it have been continuous? > If not steady tone , any ON/Off activity showing on the equipment > should tally with your hearing to show a common source. Something that > is a must in this search for Hum cause. > There is often a 'beat' or throb of a few cycles too, so even if you > get it all the time at present, that beat could show up as a lower > sideband- if the measuring gear is senstive enough. > Recording the hum is extremely tricky and hasn't been done properly > yet. > Many have tried and some have published -but the jury is still out, to > my best knowledge. > Files can be posted here btw. > PS: Insure your ears- you could get rich ! ;) > > On Apr 11, 2:50 pm, jahman <[email protected]> wrote: > > > Hi Folks, > > > I'm in Largs and think I might be hearing the Largs Hum. > > > Anyone else in the area? > > > I had North Ayrshire Noise Nuisance people around last night with a > > frequency analyser and they picked up something in the 12.5Hz+ range > > and up to 50dB. I hear it as a low frequency hum a bit like a washing > > machine on a cycle. It's causing me a lot of bother sleeping. Ear > > plugs reduce the effect though. > > > Cheers, > > > jahman --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
