As I have tried to make clear, it was not my to intension to mimic the sound we hear. The experiment is very simple, to set a small mass into vibration over the range of frequencies from about 20 to 100 cycles per second and observe the motion that takes place. I found that a 2 points above and below 50 cycles per second the vibrating mass exhibit’s a modulation that should not be there and the only conclusion can be that some form of energy is effecting what should be the simple harmonic motion of the vibrating mass and that this energy is neither a sound wave or a radio wave.
I think it would be difficult if not impossible to determine if everybody perceives exactly the same noise, this is a very complicated subject, for some sufferers experience the effects throughout the whole of their body. On Jun 18, 3:00 am, Trev <[email protected]> wrote: > Something else I meant to mention in the SA file ,apart from the > repetitive freq spread (indicating either some possible aliasing or > even artifact in the source), is that the 'cut offs' of the > fundamental are limits of what many people report as Hum. > > Mine , at the low end of 27 Hz, and upper- at 80 Hz, as the usual max > of others where it tangles (intermodulates?) with mains supply freq. > causing the annoying beat 'throb', that wears so. > This is shown as the wide yellow band at the base of the the spectrum. > > Yes!, wideband, repetitive and suspiciously clean- all in all, coupled > with the unique measurement technique makes this more than a chance > occurence. > > What are your thoughts John? > > On Jun 17, 11:39 pm, Pete <[email protected]> wrote: > > > > > I've got my computer output wired up to a NAD amplifier with some good > > bass responsive Acoustic Research loudspeakers out putting the sound. > > So, if the volume is turned right down until I just about hear this > > MP3, and the imagine it's in my head rather than coming from the > > speakers, then it's pretty damn close. If it went up and down randomly > > as it does, or as it does as I perceive it, then it'd be spot on.- Hide > > quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
