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3. Re: Olympus LS-14 initial thoughts

Subject: 3. Re: Olympus LS-14 initial thoughts
From: "William" werainey
Date: Sat Jan 5, 2013 6:29 pm ((PST))
One reason would be examining recordings of animal sounds that extend into the 
ultrasonic. A reasonable number of nominal 'audio' microphones perform decently 
in the lower ultrasonic. 
Bill R. 
>
> This post of Greg's brings up an interesting question for a hearing impaired 
> person like myself. Even using both my hearing aids, I don't hear anything 
> above 9K. Even people who hear well, as I understand it, rarely hear 20K. So, 
> the question is, why should a preamp be called on to amplify frequencies 
> above 20 K if nobody can hear it? I frequently see references to magnitudes 
> above 20K; I'm guessing this is purely techno babble. I realise of course 
> that these frequencies are real, but humans can't hear them any more than 
> they can see in the infra red.
> I feel sure that there's a perfectly logical, if complex reason for this, and 
> perhaps it's not easy to explain simply, but if it is I'd be interested to 
> hear it.
> Cheers
> Max








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