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Article #4445

Re: I don't need HDTV!

#4445
From: Arnie Frisch
Date: Wed, 21 Mar 1990 00:23
19 lines
1656 bytes
In article <2070@sauron.Columbia.NCR.COM> wte@sauron.UUCP (Bill Eason) writes:
>In article <1990Mar20.162041.4639@ux1.cso.uiuc.edu> forbes@aries.scs.uiuc.edu (Jeff Forbes) writes:
>Enter here the Nyquist criterion which says that the sampling frequency
>(44.1 kHz really) must be >= two times the highest analog frequency being
>recorded.  Therefore, the highest frequency which can be accurately 
>reproduced from a 44.1 kHz digital recording is 22.05 kHz, which is within 
>the range of hearing of several folks posting here.  I suspect my audible
>range reaches up there, too, since I can hear department store burglar
>alarms and CRT flyback transformers.

And do you and your friends have shaggy coats and waggly tails?

I don't know what frequency you think you are hearing, but I seriously
doubt that its 22 kHz.  TV flybacks run at 15,750 (approx), and
sometimes you can hear a subharmonic of higher frequency oscillators -
but as far as hearing 22kHz, that's strictly for the dogs and birds.

Arnold Frisch
Tektronix Laboratories
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Message-ID: <7143@tekgvs.LABS.TEK.COM>
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References: <sa0KhqO00Uh7M2R25C@andrew.cmu.edu> <9662@pixar.UUCP> <1990Mar20.162041.4639@ux1.cso.uiuc.edu> <2070@sauron.Columbia.NCR.COM>

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From: arnief@tekgvs.LABS.TEK.COM (Arnie Frisch)
Newsgroups: sci.electronics
Subject: Re: I don't need HDTV!
Message-ID: <7143@tekgvs.LABS.TEK.COM>
Date: 21 Mar 90 00:23:59 GMT
References: <sa0KhqO00Uh7M2R25C@andrew.cmu.edu> <9662@pixar.UUCP> <1990Mar20.162041.4639@ux1.cso.uiuc.edu> <2070@sauron.Columbia.NCR.COM>
Reply-To: arnief@tekgvs.LABS.TEK.COM (Arnie Frisch)
Organization: Tektronix, Inc., Beaverton,  OR.
Lines: 19