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From: hrs@houxb.UUCP (H.SILBIGER)
Newsgroups: net.audio
Subject: Re: CD Musings
Message-ID: <407@houxb.UUCP>
Date: Tue, 22-Jan-85 08:23:39 EST
Article-I.D.: houxb.407
Posted: Tue Jan 22 08:23:39 1985
Date-Received: Wed, 23-Jan-85 07:32:31 EST
References: <147@lcuxc.UUCP> <257@petrus.UUCP>, <271@mtxinu.UUCP>
Lines: 17

The fact that you can't hear above 20 kHz, or 15 kHz if you are
Organization: AT&T Information Systems, Holmdel NJ
Lines: 13

over 25, does mean that you cant hear harmonics above those
frequencies. If you hear somethinvg, it is ipso facto
withoin the range of your auditory mechanism.
There are very few non-auditory effects of ultrasound, 
and the ultrasound must be of very high intensity.

There is some correlation with body size, i.e. your cat
can hear higher frequency harmonics than you and may
scratch you if displeased, and your elephant may stomp
if it hears distorted infrasound.

Herman Silbiger, Certified Golden Ears
  "20 Years in thd Business of Sound Quality"