2007/3/9, Eric Dantan Rzewnicki :
What they do is add the inverted right channel onto the left and vice-versa...
Sounds simple, is simple, removes the bass and doesn't work on all titles.
A friend of mine programmed a version combined with high- and lowpass
to let the bass-part go through the effect and only karaoke-filter on
the higher frequencies. He also made the levels of the inverted
signals adjustable. That way you can select the panorama position to
remove. As a result you could filter either Eric Clapton or BB King on
"Riding with the king" and it sounded rather good.
But beware if you put these signals on a PA (for public karaoke): The
new left and right channels need to be panned. The more the better.
You will here nothing if both channels are panned center. (Because
both channels contain the other one inverted and the result will be
two normal and two inverted channels canceling each other = zero audio
Have a nice weekend,
Wenn man mit Raubkopien Bands wie Brosis oder Britney Spears wirklich
verhindern könnte, würde ich mir noch heute einen Stapel Brenner und
einen Sack Rohlinge kaufen.