On Tue, Nov 09, 2004 at 11:58:54AM -0800, Erik Steffl wrote: > mik wrote: > >a certain jonathan segel <jsegel@xxxxxxxxxxxxxxxxxxxxxx> wrote: > >>if you do end up recording bats, and slowing them into audio range, i > >>for one would like to hear the files! > >http://www.partnersinrhyme.com/soundfx/batsounds.shtml > you (original poster, I don't have the first post anymore) might also > consider other animals - small rodents, cats. Cats hear up to about > 60kHz (that's what I remember, even if it's not the right number they > hear a lot higher frequencies than we do), it was explained in the book > I read that that's what they need to be able to hear the small rodents > (so I guess small rodents emit sounds up to about 60kHz), plus cats use > higher frequencies to communicate among themselves (that's why you only > hear them doing the meow sounds when they are around humans). Ah!! very, very interesting. We have 4 cats. Communication above our hearing range would explain alot about how they all seem to notice some things at the same time and other collective behavior. And here I was thinking they were telepathic. I'm glad I asked my original question. :) -Eric Rz.
