Sadly, the files I posted are no longer here. I did some Spectrums and some synthesis mentioned below. No one explained why files were no longer supported. I used a free Spectrum Analyser on PC under XP. I've built a new PC since and will have to go back to the old one and dig. This post below was from then- discussing upper 20Hz but I there was a range from 16 to 39Hz for me -in a brick building.
Post from Feb 2009 f you click on Files, upper right here and play Hum Basic that is my synthesis. I didn't spend a lot of time on it but it is good enough. The 24 & 26 Hz are similar but more throbby- I probably would slow down the FM if I did it again, but again it gives a comparison. No one has commented on these so far btw.. The NZ and Taos Hums (imported) below mine are more classic and have more blown coke bottle component to them - this effect has been mentioned by quite a few people, mostly in the States. I never sense this though. Whilst on these files- I posted the Schuman trace as I'm convinced Harrp type resonances could be implicated in Hums. The open cct Hi Gain is my PC audio showing VLFs as standard - not sure what they reflect, but as I remember them, they were taken whilst a lot of wind was roaring around the house and varied somewhat' in synch' with that. The series extends to the range I hear, well below 50 Hz mains. Maybe ELF sound pressure waves- also capable of powering hum, but only heard as 2nd /3rd harmonics- or felt as building standing waves. On Dec 1, 11:10 pm, Steve K <[email protected]> wrote: > Quite a heated site. Has anybody done any FFT analysis inside the > buildings your hearing the hum? If yes, what are the peak low > frequencys. Mine are 40 hz and 16 hz in a wood structure home and > 28hz and 16 hz in a concrete office building basement 15 feet below > grade. > > On Nov 21, 8:36 am, Trev <[email protected]> wrote: > > > > -- 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.
