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PC World 2007 July & August
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PCWorld_2007-07-08_cd.bin
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audio-video
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reaper
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reaper1861-install.exe
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Misc
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tonifier2
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2007-02-12
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123 lines
// This effect Copyright (C) 2004 and later Cockos Incorporated
// License: GPL - http://www.gnu.org/licenses/gpl.html
// this algorithm is based on the one used by gtkguituner, the schmitt-triggering.
desc: tonifier (schmitt-triggering)
slider1:0<-100,6,1>wet mix (dB)
slider2:-100<-100,6,1>dry mix (dB)
slider3:0.995<0.96,1>amplitude falloff (factor)
slider4:0<-48,48,1>freq shift (semitones)
slider5:4<0,6,1>max auto shift (octaves)
slider6:100<0,20000>auto shift min frequency (Hz)
slider7:300<0,20000>auto shift max frequency (Hz)
slider8:0,Output frequency (Hz)
@slider
sscal=2 ^ (slider4/12) / srate;
wet=2 ^ (slider1/6);
dry=2 ^ (slider2/6);
maxf=slider7/srate*2; minf=slider6/srate*2;
state=0;
splpos=0;
trigfact=0.5;
numsamples=1024;
lastrate=0;
@block
updcnt=updcnt+samplesblock;
updcnt > srate*0.5 ? ( updcnt=0; slider8=(freq0+freq1)*0.25*srate; sliderchange(128); );
@sample
@sample
state ?
(
// track minimum and maximum values for sample
a1=max(a1,spl0);
a2=min(a2,spl0);
splpos[0]=spl0;
splpos += 1;
splpos >= 1024 ?
(
splpos=0;
state=0;
a2 *= trigfact;
a1 *= trigfact;
lst=0;
startpoint=1;
loop(numsamples-1,
lst == 0 && startpoint[0] > a1 ? lst=1;
lst == 1 && startpoint[0] >= a2 && startpoint[1] < a2 ? lst=2;
lst != 2 ? startpoint+=1;
);
smtrig=0;
endpoint=startpoint+1;
tc=0;
i=startpoint;
loop(numsamples-startpoint,
smtrig ?
(
i[0] >= a2 && i[1] < a2 ? (
endpoint=i;
tc+=1;
smtrig=0;
)
)
:
(
smtrig = i[0] >= a1;
);
i+=1;
);
endpoint == startpoint ? endpoint += 1;
lastrate = tc / (endpoint-startpoint);
);
)
:
(
0[0] <= 0 && spl0 > 0 ?
(
state=1;
1[0]=spl0;
splpos=2;
a1=spl0;
a2=0[0];
);
);
// count amplitude (square maybe?)
ampcnt0=max(ampcnt0,abs(spl0));
ampcnt1=max(ampcnt1,abs(spl1));
acnt0=ampcnt0 * (1-slider3) + acnt0*slider3;
acnt1=ampcnt1 * (1-slider3) + acnt0*slider3;
ampcnt0 *= slider3;
ampcnt1 *= slider3;
freq0=lastrate*2;
freq1=lastrate*2;
loop(slider5,
freq0 > maxf ? freq0*=0.5 : (freq0 < minf ? freq0 *= 2);
freq1 > maxf ? freq1*=0.5 : (freq1 < minf ? freq1 *= 2);
);
tpos0=tpos0+$pi*freq0;
tpos1=tpos1+$pi*freq1;
spl0=sin(tpos0)*acnt0*wet + spl0*dry;
spl1=sin(tpos1)*acnt1*wet + spl1*dry;