Once upon a time on usenet Mike Fleming wrote:
In article , "~misfit~"
writes:

Once upon a time on usenet Mike Fleming wrote:

It's poorly expressed. Sounds create standing waves in the basilar
membrane, the location of the standing wave corresponding to the
frequency. The hair cells at the location of the standing wave are
stimulated by the basilar membrane. (Those of us with tinnitus have
hair cells at specific locations continuously transmitting, which
slightly messes things up.)

Yep that sounds a lot better. My condolences on the tinnitus.

I used to do soundmixing / stagelighting for live gigs a few
deacades ago and the band I worked with didn't have very long cables
so I was never far from a PA speaker stack. I'd get temporary
tinnitus that would last for days. I'd hate to have it permanently.

If you remember old CRT tellies which had a high-pitched whistle -
what I have is the same as that.

I know exactly the noise you mean. Something to do with the flyback
transformer maybe...

Although it's there all the time, I'm
not normally conscious of it. And I think it was from riding
motorcycles with no ear protection (not exhaust noise, the noise of
wind rushing past a helmet).

Ok. I rode bikes extensively for a decade when I was younger. Luckilly no
problems here (other than age-realted loss of high frequencies). fingers
crossed
--
Shaun.

"Humans will have advanced a long, long way when religious belief has a cozy
little classification in the DSM*."
David Melville (in r.a.s.f1)
(*Diagnostic and Statistical Manual of Mental Disorders)