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Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!think!harvard!bbnccv!bbncca!aoa!rich
From: rich@aoa.UUCP (Rich Snow)
Newsgroups: net.med,net.info-terms,net.audio
Subject: Re: "Ultrasonic" hearing
Message-ID: <396@aoa.UUCP>
Date: Wed, 15-Jan-86 18:17:23 EST
Article-I.D.: aoa.396
Posted: Wed Jan 15 18:17:23 1986
Date-Received: Fri, 17-Jan-86 06:35:31 EST
References: <1280@brl-tgr.ARPA> <590@harvard.UUCP> <11370@ucbvax.BERKELEY.EDU>
Reply-To: rich@aoa.UUCP (Rich Snow)
Distribution: net
Organization: Adaptive Optics Assoc., Cambridge, Mass. USA
Lines: 25
Xref: watmath net.med:3159 net.info-terms:803 net.audio:7162

In article <11370@ucbvax.BERKELEY.EDU> spp@ucbvax.BERKELEY.EDU (Stephen P Pope) writes:
>
>     I've never encountered a TV receiver or monitor that
>didn't emit an annoying high pitched squeal at at least a
>low audible level.
	
	Bothers me too. I used to work in a TV factory.  The noise 
emenates from a coil in the horizontal oscillator of the Magnavox chassis
we used.  At one time a production line solution to sqeals of painful volume
was to heatshrink the coil in question.  Kind of like a straight jacket... 

	In some sets, the flyback itself vibrates. I would not suggest
surrounding it with heatshrink, maybe RTV?  

	Does anyone out there have a "digital" tv, and assuming you are
one of us that hears this noise (some don't) does your set squeal?

		a vidiot,

	Rich Snow  AOA-----------------*
	...!{decvax,linus,ima,ihnp4}!bbncca!aoa!rich
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