That's so typical of Hum and why it gets the Psychosomatic label I
reckon! Focusing does enhance it and also, I suspect why a lot of
hearers don't like the feeling of something so closed in to their
consciousness.Too immediate a feedback?
No real work gets done on hum by the PTB - let alone side issues like
psychosocial issues and medical interactions.
Many are quick though to shout Tinnitus etc as unfounded excuses to
doing nothing else about it.{even though they may well co-exist
commonly]
I tried low freq audio tests years ago and found a lot of LF stuff
around <30 Hz but very hard to measure free from noise tbh.
John {here] is into Gravity detection- but I just don't have a feel
for this as it seems a bit rarified and out of my experience in the
Technical field.
Distraction is a great aid with Hum- true enough!

yOn Jul 2, 7:16 am, Joshua Ginges <[email protected]> wrote:
> Hi John,
>
> Quite interesting. I've noticed myself that at times I become more obsessed 
> with hearing the hum, and it is at these times I hear it loudest! Due to the 
> low frequency nature of the hum, together with the fact that these low 
> frequencies signal danger (maybe to warn us of predators that might growl, 
> from an evolutionary point of view), it seems that we are wired to become 
> more sensitive to the hum the more we try to investigate it. I have 
> experimented with this, and indeed when I tell myself to "ignore it, it's 
> nothing… don't worry about it" or "ok, you can hear it… now forget about it", 
> the intensity of the hum diminishes (not instantaneously… can take a few days 
> of actively trying to ignore it), and can even become elusive for weeks or 
> perhaps months at a time. Of course it does return, and quite possibly due to 
> the fact that I become curious as to "where it went"? Ie Can I still hear it? 
> And then I have a job of ignoring it again. I have also found a really hard 
> day's work to be of great benefit. I recently had a deadline to meet, and the 
> six weeks prior to this were very long days of work, and not much else. 
> During this time, the hum completely disappeared for me.
>
> I am really interested in building a device to measure the hum, as you so 
> often refer to. Are you able to elaborate on the design for the group? I know 
> at least one other member is interested in trying to measure the hum.
>
> Josh

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