I don't think the Schmitt trigger applies to my hum, it is not hairline threshold- rather more drifting in intensity and faint modulation over long periods. I could see that thresholds with fast wave-front capability may be implicated in microwave hearing- but then again that's not generally what we are all talking around in 'steady hum'. Age is a big factor- and most people put on weight with age, also. I agree with Vic here on the 'norm' being a blind alley , as it is an escape route for rogues who use bad reference points to obscure the basics, never mind the special effects dept we live in! The rogues here are not the providers of hum- they are mostly probably unaware of the downside to their businesses and have a job to do. [Black projects excepted] No, I mean the people who are capable of nailing the problem- like environmental consultants, health pro's [and yes! Gov'ts] etc who all have the corporate links which 'de-tunes' them as we 'tune up' to the intrusive noise. The ironic filings in your demo show up well, Vic! I think they spell 'very hacked off'.
On Dec 22, 3:50 am, Vic <[email protected]> wrote: > "The Norm" - This excellent reference point (not) is based on the > hearing of a cognizant child's brain/hearing mechanism NOT hearing a > sonic wave in the atmosphere at 1KHz; which he would interpret as 0dB > (non-weighted). > > Yep, there's definitely something wrong with all of us that hear this > darn Hum alright! > > On Dec 21, 3:06 am, John Dawes <[email protected]> wrote: > > > > > > > > > On the question of the Hum being either on or off. Consider the > > possibility of the individual having a threshold level, which acts > > something like a Schmitt trigger. If the Hum energy or the sensitivity > > of the individual goes above or below this level it would give the > > impression of the Hum being switched on and off. We must remember at > > all times that we are not the norm, over ninety per cent of the > > population do not hear this thing. For many people the Hum begins > > quite suddenly with a change of age and for a few people who had > > suffered for many years, it disappeared just as suddenly. I asked some > > of these sufferers to think very hard and make a note of any changes > > which took place in their homes or their locality or in themselves and > > the only answer that I got was that they had put on weight. > > > On Dec 20, 2:02 am, Vic <[email protected]> wrote: > > > > Some that make recording attempts of these low-frequency sonic waves > > > probably succeed to some extent. However, from experience I, for one, > > > am aware that equipment is manufactured to only record sound that > > > occurs in the "normal" band of human hearing. Manufacturers are hardly > > > going to produce products that don't sell in the millions- Supply and > > > Demand - Particularly in our present "New World Order" where Chinese > > > factories are tailor-made to fit the multitude of consumers in the > > > West. > > > > To do the job right, you need the right tools.......... > > > > These successful (together with the unsuccessfulful) recorders make 2 > > > fatal mistakes: No reference frequency and playback speaker choice. > > -- 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.
