i got hold of this ringtone a while back and put in on my phone, taking it to work with me. funny thing is, some of the older guys I work with actually cannot hear it!!!! most of us could easily hear it however.
---------- Post added at 19:57 ---------- Previous post was at 19:54 ----------
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Originally Posted by Halcyon
Reminds me of some experiement we did back in school where we increased the pitch higher and higher until no one could hear it.
Dogs however would be able to and a few minutes later the whole surrounding houses had dogs barking away.
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dogs can hear approximately 40 Hz to 60,000 Hz, whereas humans hear approximately 30Hz to 20,000Hz. I have a clip of our dog on my phone going MAD when I produced a 10 second 23,000 cycle burst. VERY funny!!!