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PC World 2008 February
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LOSER
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stereoEnhancer
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2007-12-03
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2KB
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58 lines
// (C) 2006, Michael Gruhn.
// NO WARRANTY IS GRANTED. THIS PLUG-IN IS PROVIDED ON AN "AS IS" BASIS, WITHOUT
// WARRANTY OF ANY KIND. NO LIABILITY IS GRANTED, INCLUDING, BUT NOT LIMITED TO,
// ANY DIRECT OR INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGE ARISING
// OUT OF THE USE OR INABILITY TO USE THIS PLUG-IN, COMPUTER FAILTURE OF
// MALFUNCTION INCLUDED. THE USE OF THE SOURCE CODE, EITHER PARTIALLY OR IN
// TOTAL, IS ONLY GRANTED, IF USED IN THE SENSE OF THE AUTHOR'S INTENTION, AND
// USED WITH ACKNOWLEDGEMENT OF THE AUTHOR. FURTHERMORE IS THIS PLUG-IN A THIRD
// PARTY CONTRIBUTION, EVEN IF INCLUDED IN REAPER(TM), COCKOS INCORPORATED OR
// ITS AFFILIATES HAVE NOTHING TO DO WITH IT. LAST BUT NOT LEAST, BY USING THIS
// PLUG-IN YOU RELINQUISH YOUR CLAIM TO SUE IT'S AUTHOR, AS WELL AS THE CLAIM TO
// ENTRUST SOMEBODY ELSE WITH DOING SO.
desc:Stereo Enhancer
slider1:100<0,200,1>Width Low (%)
slider2:500<0,20000,1>Crossover (Hz)
slider3:100<0,200,1>Width High (%)
@init
cDenorm = 10^-30;
@slider
widthLP = slider1 / 200;
width = slider3 / 200;
freq = min(slider2,srate);
x = exp(-2.0*$pi*freq/srate);
a0 = 1.0-x;
b1 = -x;
@sample
s0 = spl0;
s1 = spl1;
spl0 = (tmpl = a0*spl0 - b1*tmpl + cDenorm);
spl1 = (tmpr = a0*spl1 - b1*tmpr + cDenorm);
s0 -= spl0;
s1 -= spl1;
mono = (s0 + s1)/2;
stereo = (s0 - s1);
s0 = (mono + stereo * width) / max(width,1);
s1 = (mono - stereo * width) / max(width,1);
monoLP = (spl0 + spl1)/2;
stereoLP = (spl0 - spl1);
spl0 = (monoLP + stereoLP * widthLP) / max(widthLP,1);
spl1 = (monoLP - stereoLP * widthLP) / max(widthLP,1);
spl0 += s0;
spl1 += s1;