Re: a Dreaming Plug discovery?

[chrisw@miso.wwa.com (Chris Williams)]

>On Sat, 20 Apr 1996 02:47:25 -0700 (PDT), IEDSRI@aol.com wrote:
>
>>Another question: Since we can more or less isolate parts of 
>>Kate's music that exist only on left or right channels, is it not 
>>now also possible for someone to write a program that 
>>would record the Dreaming-Plug signal, then search for 
>>itself within the recording as a whole and cancel itself out?  
>>This would be every bit as revealing of the inner workings 
>>of the music, since it would leave us with ONLY those parts 
>>of the recording which are perfectly centered between
>>left and right channels.  Does anyone know whether this 
>>is feasible?  If so, would someone please do it? 
>>
>This isn't actually too difficult. With a little knowledge of sound
>processing and either a good sound editor or reasonable programming
>skills it is perfectly possible. I used the sound editor method of
>listening to the songs instead of ever making a Dreaming Plug and I
>may get round to writing the program if I ever finish Uni and get rid
>of all these damn assignments.

   Actually, the standard Dolby Surround Sound Decoder can do it.
The decoder retreives the L+R information for the center channel
just as it does the L-R information for the rear channel. So pretty
much any good surround system can be used for this purpose.