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From: ben@catnip.UUCP (Bennett Broder)
Newsgroups: net.video,net.analog
Subject: MTS stereo decoder
Message-ID: <218@catnip.UUCP>
Date: Sat, 8-Feb-86 19:32:38 EST
Article-I.D.: catnip.218
Posted: Sat Feb  8 19:32:38 1986
Date-Received: Tue, 11-Feb-86 04:14:10 EST
Organization: The Broder Residence, Holmdel, NJ  07733
Lines: 20
Xref: watmath net.video:1999 net.analog:676

The current (March 1986) issue of Radio-Electronics magazine contains
plans for a stereo tv decoder.  I was pleased as punch to see this, since
I have been looking for a cheap and convenient way of adding stereo decoding
to my video system.  It looks like it could be built for about $40.

Here is the rub.  The circuit does not contain any noise reduction.
Apparently, the compression technique used is proprietary to dbx, and
the chips necessary to do it are available only to licenced OEMs.
So, my question:

  - Is it worth building one of these?
  - How noisy will it be without the dbx chips?
  - Will there be any other unwanted side effects (breathing noises
       or frequency response abberations) without the dbx?

If I get enough responses and/or actually build one of these things,
I will post a summary.

Ben Broder
{ihnp4, decvax} !hjuxa!catnip!ben