🚀 go-pugleaf

In article <1992Dec23.000104.10686@news.acns.nwu.edu> yuen@casbah.acns.nwu.edu writes:
>Hi there,
>
>I am interested in finding plans,  kits or assembled pc to do lead vocal
>suppression on various source materials (tape, radio, CD etc). Can
>anyone help provide some hints or clues ?
>Am also interested in finding out how they work and quality 
>compared to a  karaoke machine (e.g. Pioneer) if somebody out there
>had built one before.
>I saw the ed in Radio electronics in May but this company already 
>disconnected their business phones. 

Vocal eliminators work by subtracting the left and right signals from each 
other. Usually outputting a mono signal, but I have seen one that ouputs a
mock stereo (mono to left and phase shifted mono to right!) signal. Sounds
a bit better than mono, but if recorded and played back on MONO equipment
all the music disappears....(remember, its out of phase with itself)

I will post an ASCII of a cirsuit I use, which is very good when used with
a CD/Tape source. CD is best, and it varies depending on how the original
CD/Tape/Record was mixed as to how well it works. It is only a simple circuit
(3 transistors and a dual opamp) but it works, and it also doesnt clobber
the bass signal (usually also in the centre) ... hence the opamp (a low pass
filter)

Keep watching .... when I get it ASCII'd i will post!

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     _/      _/   _/   _/  _/   _/_/_/_/   |
    _/_/  _/_/   _/   _/_/     _/          |         Michael Brown
   _/  _/  _/   _/   _/       _/_/         |
  _/      _/   _/   _/_/     _/            |   cstadbg@csv.warwick.ac.uk
 _/      _/   _/   _/  _/   _/_/_/_/  _/   |     mjb@dcs.warwick.ac.uk
                                           |    csulo@csv.warwick.ac.uk
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