[ale] MORE MP3 voice removal

[Jeff Hubbs]

I should also point out that the TVE and things like it usually could not
render lead vox completely inaudible in most program material, but it could
usually take it down low enough that you could re-record a new vocal track.
Sometimes some reverb from the lead vocal would be partially left behind.
If your source media were vinyl, that didn't help matters either just
because of inaccuracies in the mastering/reproduction process.  

I think I have a demo LP (12" transparent blue vinyl, no less!) of the TVE
and other studio equipment form the same mfr in action.  I recall that some
John Denver was among the demonstrated tracks.  

If you're going to do this in digital (actually, this will hold true even if
you do it in analog), you will need to carefully tweak the level of the
subtracted channel to maximize the cancellation.  Also, anything else that
was laid down in mono dead-center (perhaps snare drum?) will get nuked along
with lead vox, which may require you to fly an instrument back in somehow if
the absence is bothersome.

Oh, and of course, your result will be in mono.

- Jeff

> -----Original Message-----
> From: Jeff Hubbs [mailto:Jhubbs at niit.com]
> Sent: Tuesday, June 27, 2000 2:43 PM
> To: Robert L. Harris; Atlanta Linux Enthusiasts
> Subject: RE: [ale] MP3 voice removal?
> 
> 
> Most "vocal eliminator" hardware that I know of (the Thompson Vocal
> Eliminator used to be produced right here in Aaaaaat-lanna!) 
> performed some
> analog-domain trickery that involved (among other EQ-related things)
> subtracting one stereo channel from the other - the idea 
> being that many
> lead vocal tracks were laid down in mono and panned 
> dead-center, so that the
> lead vocal in one channel would almost exactly cancel that in 
> the other.
> With the kinds of vocal processing (Aphex, etc.) that is 
> typically done
> since the days of the TVE, channel subtraction-based 
> processes may not work
> on more recent program material.  
> 
> Your alternative is to find a MIDI file of the same tune and 
> re-orchestrate
> it sans vox.  
> 
> 
> > -----Original Message-----
> > From: Robert L. Harris [mailto:Robert.L.Harris at rnd-consulting.com]
> > Sent: Tuesday, June 27, 2000 1:30 PM
> > To: Atlanta Linux Enthusiasts
> > Subject: [ale] MP3 voice removal?
> > 
> > 
> > 
> > 
> > For a Demo at my TKD school, they want to play some music, 
> > sans voices.
> > Is there a good tool for linux that will rip the voices out 
> of mp3 or
> > wav files?
> > 
> > Robert
> > 
> > 
> > :wq!
> > --------------------------------------------------------------
> > -------------
> > Robert L. Harris                |  Micros~1 :  
> > Senior System Engineer          |    For when quality, reliability 
> >   at RnD Consulting             |      and security just aren't
> >                                 \_       that important!
> > DISCLAIMER:
> >       These are MY OPINIONS ALONE.  I speak for no-one else.
> > FYI:
> >  perl -e 'print 
> > $i=pack(c5,(41*2),sqrt(7056),(unpack(c,H)-2),oct(115),10);'
> > 
> > --
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