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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)));
- );
-