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PC World 2007 March
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PCWorld_2007-03_cd.bin
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audio-video
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reaper
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reaper174-install.exe
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Effects
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Guitar
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chorus
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2006-12-11
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66 lines
// This effect Copyright (C) 2004 and later Cockos Incorporated
// License: GPL - http://www.gnu.org/licenses/gpl.html
desc:chorus
slider1:15<1,250>chorus length (ms)
slider2:1<1,8,1>number of voices
slider3:0.5<0.1,16>rate (hz)
slider4:0.7<0,1>pitch fudge factor
slider5:-6<-100,12,1>wet mix (dB)
slider6:-6<-100,12,1>dry mix (dB)
@init
bpos=0;
@slider
numvoices=min(16,max(slider2,1));
choruslen=slider1*srate*0.001;
i=0;
loop(numvoices,
i[0]=(i+1)/numvoices*$pi;
i+=1;
);
bufofs=4096;
csize=choruslen/numvoices * slider4;
rateadj=slider3*2*$pi/srate;
wetmix = 2 ^ (slider5/6);
drymix = 2 ^ (slider6/6);
@sample
bpos >= choruslen ? (
bpos=0;
);
os0=spl0;
// calculate new sample based on numvoices
spl0=spl0*drymix;
vol=wetmix/numvoices;
i=0;
loop(numvoices,
tpos = bpos - (0.5+0.49*sin( i[0] += rateadj)) * (i+1) * csize;
tpos < 0 ? tpos += choruslen;
frac=tpos-(0|tpos);
ntpos=tpos>=(choruslen-1)?0:tpos+1;
spl0 += (bufofs[tpos]*(1-frac) + bufofs[ntpos]*frac ) * vol;
i+=1;
);
bufofs[bpos]=os0;
bpos+=1;
spl1=spl0;