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From: bill@videovax.tv.Tek.com (William K. McFadden)
Newsgroups: sci.electronics
Subject: Re: Any suggestions for building a limiter for my stereo? [GRRRR!]
Message-ID: <5444@videovax.tv.Tek.com>
Date: 8 Jun 89 21:12:55 GMT
References: <376@greek.UUCP> <679@uvicctr.UVic.ca.UUCP> <788@happym.wa.com> <4494@midas.STS.TEK.COM> <684@uvicctr.UVic.ca.UUCP> <388@greek.UUCP>
Reply-To: bill@videovax.tv.tek.com.UUCP (William K. McFadden)
Distribution: usa
Organization: Tektronix TV Measurement Systems, Beaverton OR
Lines: 15

In article <388@greek.UUCP> mark@greek.UUCP (Mark Jeghers) writes:
->sigh...okay, now...let me repeat myself.  I plan to use the compresser half
->of a compander chip.  The slope may be either variable or fixed, but for sure
->between 1:1 and 2:1.  Does this seem like a sound implementation?  How about
->the NE570/571 chip by Signetics?  No, I don't want to make tapes through my
->VCR.  Do any people out there have suggestions or ideas about this?

Look in the Signetics Linear Data Book.  AN-174 describes a compressor-expander
that is continuously variable from 2:1 compression to 1:2 expansion.  Since the
NE570 has two companders, you only need one for stereo.  Check it out.
-- 
Bill McFadden    Tektronix, Inc.  P.O. Box 500  MS 58-639  Beaverton, OR  97077
UUCP: bill@videovax.Tek.com,  {hplabs,uw-beaver,decvax}!tektronix!videovax!bill
GTE: (503) 627-6920         "The biggest difference between developing a missle
component and a toy is the 'cost constraint.'" -- John Anderson, Engineer, TI