How true is this?

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Well, back in them good ol' days (ya know, some 5000 years ago) men had to listen for subtle sounds in lower frequency ranges to spot prey and dangerous animals and women had to attenuate their hearing to listen to the babbies (<- really obscure reference to a group of british webcasters there) which emit sound on higher frequency bands.

Nowadays we hunt for prey (gadgets) and lethal creatures (mother-in-laws) with tools like internet and dedicated ringtones...
 
Yes, those crickets that are brownish. They get in the walls and to me are as loud as stereo, and can't turn them off! Cicadas don't get in the house, so no bother. And I haven't got used to them in 14 years, and can't tune them out!

We used to keep a lot of snakes, lizards & spiders.
Once dropped a carton of crickets. Had them in the woodwork for bloody ages, what a racket.
 
I now have no crickets! Seems they were attracted to the bug spray. I quit spraying and they left!
 

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so all I need is to exercise some buried tiny muscles to improve my age related uprightness - saves on those little blue or yellow pills ?

of course then the opportunity would need to "arise" as well ;)

Courtesy of the
Hearing Foundation of Canada
Sound waves in the air are directed by the outer ear into the ear drum causing it to vibrate very slightly. The three bones of the middle ear (the smallest bones in the human body) work together as a lever system to amplify the vibrations as they pass them along to a smaller vibrating membrane on the surface of the cochlea of the inner ear. This vibration is passed on by the fluid filled spiral tube of the cochlea to tiny hair cells along the inside. As the hairs move, nerve cells at their base change this motion into electrical signals that are passed on to the brain. The brain in turn interprets those signals as sound.
Hearing loss or impairment can stem from a variety of problems, which can occur as sound is transferred along this mechanical and electrical paths to the brain. The causes can be as simple (and reversible) as wax build up or inflammation of the outer ear, or more serious yet often self-repairing broken eardrum, or even abnormal or dislocated bones of the middle ear.
Inner ear damage can be acquired from a short blast or repeated or prolonged exposure to loud noise (construction noise or a Walkman cranked up too loud). The delicate hairs in the cochlea can be irreparably destroyed. High frequency sounds are usually the first to go. Disease, infection or drugs can also damage the inner ear.
Walkman? Your age is showing, Chris.
 
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phil - that reference was actually a quote from the HFC website, but the principle still applies to today's MP3 et al portable players - when you can hear the sound of 'cans' or 'buds' on someone else's head when they're walking by - that must be plenty bloody loud
 
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