🚀 go-pugleaf

     Hi there!

      I posted an article asking a biout going from mono to stereo,
and I recieved this EXTREEMLY useful response.  I was asked to post it
to the net, as the sender was unable to get it through.
What follows is the reply I recived, unedited.-Gordon Rogers
                                               gnr100@psuvm.psu.edu
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Date: Wed, 18 Nov 92 22:12:39 +0100
From: tsjoit@solist.htsa.aha.nl
Posted-Date: Wed, 18 Nov 92 22:12:39 +0100
Received-Date: Wed, 18 Nov 92 22:12:39 +0100
Message-Id: <9211182112.AA29865@solist.htsa.aha.nl>
To: GNR100@psuvm.psu.edu
Subject: Re: making mono from stereo
Newsgroups: sci.electronics
In-Reply-To: <92322.094702GNR100@psuvm.psu.edu>
References: <721897222.F00004@tdkt.kksys.com>
Organization: Algemene Hogeschool Amsterdam, Polytechnic Institute

Hiya! you once asked wether it was possible to make stereo out a mono signal.

Well, there is a off-the-shelf IC for this job ! :-)

It's the TDA3810, in a 20-DIP package made by Philips. It requires some
small stuff resistors and capacitors and then it's able to make some sort
of 'spatial' sound very similair to stereo,... naturally, it's not as good
as the real stereo-stuff... but nevertheless a nice enhancement to dull-mono.

I haven't build it yet (no big deal really, less than 20 components on a small
PCB) I haven't got the time for it.

It also has an extra feature: It contains a SPATIAL STEREO (R) circuit to
make ordinairy stereo sound fuller... Obviously, it's a trully consumer-
electronics chip used in Philips products... It's quite cheap... here in
the Netherlands (Philips home country) it only costs around DFL 10,- which
is around US$ 5,- I guess...

Could you be so kind to forward the information I wrote above to the
sci.electronics newsgroup ? My local Unix-site seems to be a bit ill...

Well, greetings frm Holland !