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reaper
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SStillwell
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badbussmojo
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2007-12-03
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// Copyright 2006, Thomas Scott Stillwell
// All rights reserved.
//
//Redistribution and use in source and binary forms, with or without modification, are permitted
//provided that the following conditions are met:
//
//Redistributions of source code must retain the above copyright notice, this list of conditions
//and the following disclaimer.
//
//Redistributions in binary form must reproduce the above copyright notice, this list of conditions
//and the following disclaimer in the documentation and/or other materials provided with the distribution.
//
//The name of Thomas Scott Stillwell may not be used to endorse or
//promote products derived from this software without specific prior written permission.
//
//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
//IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
//FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
//BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
//(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
//PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
//STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
//THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
desc:nonlinear waveshaper
slider1:0<-60,0,0.01>Pos. Thresh (dB)
slider2:0<-60,0,0.01>Neg. Thresh (dB)
slider3:1<1,2,0.001>Pos. Nonlinearity
slider4:1<1,2,0.001>Neg. Nonlinearity
slider5:0<0,6,0.01>Pos. Knee (dB)
slider6:0<0,6,0.01>Neg. Knee (dB)
slider7:0<0,100,0.1>Mod A
slider8:0<0,100,0.1>Mod B
@init
log2db = 8.6858896380650365530225783783321; // 20 / ln(10)
db2log = 0.11512925464970228420089957273422; // ln(10) / 20
pi = 3.1415926535;
halfpi = pi / 2;
@slider
pt=slider1;
nt=slider2;
pl=slider3-1;
nl=slider4-1;
mixa=slider7/100;
mixb=slider8/100;
drivea=1;
mixa1 = 1 - mixa;
drivea1 = 1 / (1 - (drivea / 2));
drivea2 = drive / 2;
mixb1 = 1 - mixb;
pts=slider5;
nts=slider6;
ptt=pt - pts;
ntt=nt - nts;
ptsv=exp(ptt * db2log);
ntsv=-exp(ntt * db2log);
@sample
mixa > 0 ? (
wet0 = drivea1 * spl0 * (1 - abs(spl0 * drivea2));
wet1 = drivea1 * spl1 * (1 - abs(spl1 * drivea2));
spl0 = mixa1 * spl0 + (mixa) * wet0;
spl1 = mixa1 * spl1 + (mixa) * wet1;
);
mixb > 0 ? (
wet0 = sin(spl0 * halfpi);
wet1 = sin(spl1 * halfpi);
spl0 = mixb1 * spl0 + (mixb) * wet0;
spl1 = mixb1 * spl1 + (mixb) * wet1;
);
db0 = log(abs(spl0)) * log2db;
db1 = log(abs(spl1)) * log2db;
spl0>ptsv ? (
diff=max(min((db0 - ptt),0),pts);
pts == 0 ? mult = 0 : mult=diff/pts;
spl0 = ptsv + ((spl0 - ptsv) / (1 + (pl * mult)));
);
spl0<ntsv ? (
diff=max(min((db0 - ntt),0),nts);
nts == 0 ? mult = 0 : mult=diff/nts;
spl0 = ntsv + ((spl0 - ntsv) / (1 + (nl * mult)));
);
spl1>ptsv ? (
diff=max(min((db1 - ptt),0),pts);
pts == 0 ? mult = 0 : mult=diff/pts;
spl1 = ptsv + ((spl1 - ptsv) / (1 + (pl * mult)));
);
spl1<ntsv ? (
diff=max(min((db1 - ntt),0),nts);
nts == 0 ? mult = 0 : mult=diff/nts;
spl1 = ntsv + ((spl1 - ntsv) / (1 + (nl * mult)));
);