Xref: utzoo rec.audio:8826 sci.electronics:4189
Path: utzoo!attcan!uunet!portal!cup.portal.com!R_Tim_Coslet
From: R_Tim_Coslet@cup.portal.com
Newsgroups: rec.audio,sci.electronics
Subject: Re: Extracting Mono from Stereo
Message-ID: <10744@cup.portal.com>
Date: 1 Nov 88 13:38:03 GMT
References: <343@ivucsb.UUCP> <3902@homxc.UUCP> <353@ivucsb.UUCP>
Organization: The Portal System (TM)
Lines: 30

I was unable to mail the following response to Allen Sullivan's e-mail
response to my posting in this subject. The return path was bad and I was
unable to construct a good one.
-------------------------------------------------------------------------------
You wrote...
>Might be doable in electronics, if variable time delays are available to
>implement a correlator...adjust the delays for best mathcing in the two
>channels, and knowing the delay, the heading is almost [sans ambiguity]
>computalbe...with 3 ears, tis doable. With the digital sampling, and
>digital correlators, should be doable...sample every 10 microseconds so
>that even the high frequencies can be time aligned accurately.
>
>Any replies are appreciated.
>
>ALlen Sullivan

Sure it is doable "with 3 ears"...
However the original poster was asking how to do it with conventional
2 channel "Left/Right" stereo. Which can't be done (as another poster
has already said) because you can't generally solve 2 simultanious
equations of 3 unknowns to unambigious results.

I simply was explaining (to a poster asking "then how do the ears do it?")
how they even frequently fail, except that your head can turn. The 
"electronic head" in conventional stereo can't.

                                        R. Tim Coslet

Usenet: R_Tim_Coslet@cup.portal.com
BIX:    r.tim_coslet