> > When I was about 17, I could hear the high voltage flyback transformer
> > whine in a televison set. If I remember correctly that is about 18khz,
> > and the technical book I was reading at the time said it was inaudible
> > to most people, but some with very good hearing would be able to hear
> > it.
>
>I too, when younger, could hear fly-back transformers (they're just
>under 16KHz) as well as the ultra-sonic motion sensers in jewelry
>stores. Alas, that was over 30 years ago now and I am no longer
>bothered by such sounds. :-(
I'm still young and can hear all this stuff, like the high tension btis of
tvs, that parents, teachers, etc can't. :) I have actually heard CDs which
have had continuous high frequency tones throughout. It can be more of a
pain than helpful - imagine having to hear the monitors of mac LC 450s (at
least i think that's what they are) as well as having to use them!
Christopher Spalding
Genius, generally excellent and gifted person.
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