[extropy-chat] why so low?

[R.Coyote]

http://www.gi.alaska.edu/ScienceForum/ASF8/804.html


----- Original Message ----- 
From: "Spike" <spike66 at comcast.net>
To: "'ExI chat list'" <extropy-chat at lists.extropy.org>
Sent: Sunday, November 02, 2003 11:04 PM
Subject: [extropy-chat] why so low?


> 
> Dog whistles and cat-B-gone screechers emit sounds
> that are above the human hearing range.  I have some
> deer alerts on my bike that also emit a sound higher
> than can be heard by humans.  They supposedly work
> on mooses, (meese?), elk and their ilk too.  
> Can someone please explain why the human hearing 
> range is so low?  Is it the lowest of all the beasts?  
> 
> Hey, grokiphany:  we know if we breathe helium, our 
> voice pitch goes way up.  If we take a hoot of
> xenon (density ~3x air) would not we get an octave
> and a third lower?  If we talked like Lurch, would
> the dog and the cat be able to hear us?
> 
> spike
> 
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