🚀 go-pugleaf

In article <LyB0VB2w164w@q106fm.uucp> pete@q106fm.uucp (pete cervasio) writes:
>cab@col.hp.com (Chris Best) writes:
>
>> 
>> I can't help you find the company, but here's how they work
>> (as it was explained to me): any signal common to both
>> channels is removed, and signals that are different are
>> left in.  So I guess the song has to be stereo.
>> 
>> Since vocals are typically centered in the image, that's
>> what gets cut out.  Don't know what else does, though.
>
>A _LOT_ of the bass disappears, since it's usually recorded center
>channel, too.  You need drastic equalization to get some of it back.
>There is a problem if there is stereo reverb on the vocals, too... it
>doesn't disappear!

Most of the commercial units remove everything common to both channels
above 250 Hz or so.  This eliminates most of the vocal while leaving most
of the bass.  However if you have anything else mixed to the center
position, it will go away as well, of course (like a lead guitar).

Stereo reverb on the vocals will stick around.  Vocals that were recorded
originally in stereo (like they really ought to be, but seldom are) will
stick around.  Anything miked with a minimalist configuration (very little
rock stuff, but some jazz and a lot of classical) won't work at all.
--scott