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2007-02-22
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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.
//
//
//This modified version of the most excellent SS:rbj7eq is presented by TJ Higley.
//Last modified: 2:36 PM, 2/18/07
//
//The frequency of the low shelf filter is customizable by modifying 'lowshelffreq' in line 52.
//The frequency of each slider is customizable by modifying 'sliderXfreq' in lines 53 - 64. If you change these,
//be sure to change the label in lines 36 - 51! :)
//The Q value of each slider is customizable by modifying 'sliderQ' in lines 65 - 76.
desc:12-band + HPF EQ, based on RBJ Filter Cookbook
slider1:0<0,400,5>HPF:
slider2:0<-12,12,0.1>Low Shelf:
slider3:0<-12,12,0.5>80 Hz:
slider4:0<-12,12,0.5>150 Hz:
slider5:0<-12,12,0.5>250 Hz:
slider6:0<-12,12,0.5>400 Hz:
slider7:0<-12,12,0.5>630 Hz:
slider8:0<-12,12,0.5>800 Hz:
slider9:0<-12,12,0.5>1.6 kHz:
slider10:0<-12,12,0.5>3 kHz:
slider11:0<-12,12,0.5>5 kHz:
slider12:0<-12,12,0.5>7 kHz:
slider13:0<-12,12,0.5>10 kHz:
slider14:0<-12,12,0.5>12 kHz:
slider15:22000<400,22000,5>LPF:
slider16:0<-12,12,0.5>Output Gain:
@init
lowshelffreq = 110;
slider3freq = 80;
slider4freq = 150;
slider5freq = 250;
slider6freq = 400;
slider7freq = 630;
slider8freq = 800;
slider9freq = 1600;
slider10freq = 3000;
slider11freq = 5000;
slider12freq = 7000;
slider13freq = 10000;
slider14freq = 12000;
slider3Q = 1;
slider4Q = 1;
slider5Q = 1;
slider6Q = 1;
slider7Q = 1;
slider8Q = 1;
slider9Q = 1;
slider10Q = 1;
slider11Q = 1;
slider12Q = 1;
slider13Q = 1;
slider14Q = 1;
cDcAdd = 10^-30;
cDenorm = 10^-30;
@slider
gain = 10^(slider16/20);
aHPF = 1;
sHPF = 1;
qHPF = 1 / (sqrt((aHPF + 1/aHPF)*(1/sHPF - 1) + 2));
w0HPF = 2 * $pi * slider1/srate;
cosw0HPF = cos(w0HPF);
sinw0HPF = sin(w0HPF);
alphaHPF = sinw0HPF / (2 * qHPF);
b0HPF = (1 + cosw0HPF)/2;
b1HPF = -(1 + cosw0HPF);
b2HPF = (1 + cosw0HPF)/2;
a0HPF = 1 + alphaHPF;
a1HPF = -2 * cosw0HPF;
a2HPF = 1 - alphaHPF;
b0HPF /= a0HPF;
b1HPF /= a0HPF;
b2HPF /= a0HPF;
a1HPF /= a0HPF;
a2HPF /= a0HPF;
aLS = 10^(slider2/40);
sLS = 2;
qLS = 1 / (sqrt((aLS + 1/aLS)*(1/sLS - 1) + 2));
w0LS = 2 * $pi * lowshelffreq/srate;
cosw0LS = cos(w0LS);
sinw0LS = sin(w0LS);
alphaLS = sinw0LS / (2 * qLS);
b0LS = aLS * ((aLS+1) - (aLS-1)*cosw0LS + 2*sqrt(aLS)*alphaLS);
b1LS = 2 * aLS * ((aLS-1) - (aLS+1)*cosw0LS);
b2LS = aLS * ((aLS+1) - (aLS-1)*cosw0LS - 2*sqrt(aLS)*alphaLS);
a0LS = (aLS+1) + (aLS-1)*cosw0LS + 2*sqrt(aLS)*alphaLS;
a1LS = -2 * ((aLS-1) + (aLS+1)*cosw0LS);
a2LS = (aLS+1)+(aLS-1)*cosw0LS-2*sqrt(aLS)*alphaLS;
b0LS /= a0LS;
b1LS /= a0LS;
b2LS /= a0LS;
a1LS /= a0LS;
a2LS /= a0LS;
qC = slider3Q;
aC = 10^(slider3/40);
w0C = 2 * $pi * slider3freq/srate;
cosw0C = cos(w0C);
sinw0C = sin(w0C);
alphaC = sinw0C / (2 * qC);
b0C = 1 + alphaC * aC;
b1C = -2 * cosw0C;
b2C = 1 - alphaC * aC;
a0C = 1 + alphaC / aC;
a1C = -2 * cosw0C;
a2C = 1 - alphaC / aC;
b0C /= a0C;
b1C /= a0C;
b2C /= a0C;
a1C /= a0C;
a2C /= a0C;
qD = slider4Q;
aD = 10^(slider4/40);
w0D = 2 * $pi * slider4freq/srate;
cosw0D = cos(w0D);
sinw0D = sin(w0D);
alphaD = sinw0D / (2 * qD);
b0D = 1 + alphaD * aD;
b1D = -2 * cosw0D;
b2D = 1 - alphaD * aD;
a0D = 1 + alphaD / aD;
a1D = -2 * cosw0D;
a2D = 1 - alphaD / aD;
b0D /= a0D;
b1D /= a0D;
b2D /= a0D;
a1D /= a0D;
a2D /= a0D;
qE = slider5Q;
aE = 10^(slider5/40);
w0E = 2 * $pi * slider5freq/srate;
cosw0E = cos(w0E);
sinw0E = sin(w0E);
alphaE = sinw0E / (2 * qE);
b0E = 1 + alphaE * aE;
b1E = -2 * cosw0E;
b2E = 1 - alphaE * aE;
a0E = 1 + alphaE / aE;
a1E = -2 * cosw0E;
a2E = 1 - alphaE / aE;
b0E /= a0E;
b1E /= a0E;
b2E /= a0E;
a1E /= a0E;
a2E /= a0E;
qF = slider6Q;
aF = 10^(slider6/40);
w0F = 2 * $pi * slider6freq/srate;
cosw0F = cos(w0F);
sinw0F = sin(w0F);
alphaF = sinw0F / (2 * qF);
b0F = 1 + alphaF * aF;
b1F = -2 * cosw0F;
b2F = 1 - alphaF * aF;
a0F = 1 + alphaF / aF;
a1F = -2 * cosw0F;
a2F = 1 - alphaF / aF;
b0F /= a0F;
b1F /= a0F;
b2F /= a0F;
a1F /= a0F;
a2F /= a0F;
qG = slider7Q;
aG = 10^(slider7/40);
w0G = 2 * $pi * slider7freq/srate;
cosw0G = cos(w0G);
sinw0G = sin(w0G);
alphaG = sinw0G / (2 * qG);
b0G = 1 + alphaG * aG;
b1G = -2 * cosw0G;
b2G = 1 - alphaG * aG;
a0G = 1 + alphaG / aG;
a1G = -2 * cosw0G;
a2G = 1 - alphaG / aG;
b0G /= a0G;
b1G /= a0G;
b2G /= a0G;
a1G /= a0G;
a2G /= a0G;
qH = slider8Q;
aH = 10^(slider8/40);
w0H = 2 * $pi * slider8freq/srate;
cosw0H = cos(w0H);
sinw0H = sin(w0H);
alphaH = sinw0H / (2 * qH);
b0H = 1 + alphaH * aH;
b1H = -2 * cosw0H;
b2H = 1 - alphaH * aH;
a0H = 1 + alphaH / aH;
a1H = -2 * cosw0H;
a2H = 1 - alphaH / aH;
b0H /= a0H;
b1H /= a0H;
b2H /= a0H;
a1H /= a0H;
a2H /= a0H;
qI = slider9Q;
aI = 10^(slider9/40);
w0I = 2 * $pi * slider9freq/srate;
cosw0I = cos(w0I);
sinw0I = sin(w0I);
alphaI = sinw0I / (2 * qI);
b0I = 1 + alphaI * aI;
b1I = -2 * cosw0I;
b2I = 1 - alphaI * aI;
a0I = 1 + alphaI / aI;
a1I = -2 * cosw0I;
a2I = 1 - alphaI / aI;
b0I /= a0I;
b1I /= a0I;
b2I /= a0I;
a1I /= a0I;
a2I /= a0I;
qJ = slider10Q;
aJ = 10^(slider10/40);
w0J = 2 * $pi * slider10freq/srate;
cosw0J = cos(w0J);
sinw0J = sin(w0J);
alphaJ = sinw0J / (2 * qJ);
b0J = 1 + alphaJ * aJ;
b1J = -2 * cosw0J;
b2J = 1 - alphaJ * aJ;
a0J = 1 + alphaJ / aJ;
a1J = -2 * cosw0J;
a2J = 1 - alphaJ / aJ;
b0J /= a0J;
b1J /= a0J;
b2J /= a0J;
a1J /= a0J;
a2J /= a0J;
qK = slider11Q;
aK = 10^(slider11/40);
w0K = 2 * $pi * slider11freq/srate;
cosw0K = cos(w0K);
sinw0K = sin(w0K);
alphaK = sinw0K / (2 * qK);
b0K = 1 + alphaK * aK;
b1K = -2 * cosw0K;
b2K = 1 - alphaK * aK;
a0K = 1 + alphaK / aK;
a1K = -2 * cosw0K;
a2K = 1 - alphaK / aK;
b0K /= a0K;
b1K /= a0K;
b2K /= a0K;
a1K /= a0K;
a2K /= a0K;
qL = slider12Q;
aL = 10^(slider12/40);
w0L = 2 * $pi * slider12freq/srate;
cosw0L = cos(w0L);
sinw0L = sin(w0L);
alphaL = sinw0L / (2 * qL);
b0L = 1 + alphaL * aL;
b1L = -2 * cosw0L;
b2L = 1 - alphaL * aL;
a0L = 1 + alphaL / aL;
a1L = -2 * cosw0L;
a2L = 1 - alphaL / aL;
b0L /= a0L;
b1L /= a0L;
b2L /= a0L;
a1L /= a0L;
a2L /= a0L;
qM = slider13Q;
aM = 10^(slider13/40);
w0M = 2 * $pi * slider13freq/srate;
cosw0M = cos(w0M);
sinw0M = sin(w0M);
alphaM = sinw0M / (2 * qM);
b0M = 1 + alphaM * aM;
b1M = -2 * cosw0M;
b2M = 1 - alphaM * aM;
a0M = 1 + alphaM / aM;
a1M = -2 * cosw0M;
a2M = 1 - alphaM / aM;
b0M /= a0M;
b1M /= a0M;
b2M /= a0M;
a1M /= a0M;
a2M /= a0M;
qN = slider14Q;
aN = 10^(slider14/40);
w0N = 2 * $pi * slider14freq/srate;
cosw0N = cos(w0N);
sinw0N = sin(w0N);
alphaN = sinw0N / (2 * qN);
b0N = 1 + alphaN * aN;
b1N = -2 * cosw0N;
b2N = 1 - alphaN * aN;
a0N = 1 + alphaN / aN;
a1N = -2 * cosw0N;
a2N = 1 - alphaN / aN;
b0N /= a0N;
b1N /= a0N;
b2N /= a0N;
a1N /= a0N;
a2N /= a0N;
aP = 1;
sP = 2;
qP = 1 / (sqrt((aP + 1/aP)*(1/sP - 1) + 2));
w0P = 2 * $pi * slider15/srate;
cosw0P = cos(w0P);
sinw0P = sin(w0P);
alphaP = sinw0P / (2 * qP);
b0P = (1 - cosw0P)/2;
b1P = (1 - cosw0P);
b2P = (1 - cosw0P)/2;
a0P = 1 + alphaP;
a1P = -2 * cosw0P;
a2P = 1 - alphaP;
b0P /= a0P;
b1P /= a0P;
b2P /= a0P;
a1P /= a0P;
a2P /= a0P;
@sample
freq0 > 10 ? (
ospl0 = spl0;
spl0 = b00 * spl0 + b10 * xl10 + b20 * xl20 - a10 * yl10 - a20 * yl20;
xl20 = xl10;
xl10 = ospl0;
yl20 = yl10;
yl10 = abs(spl0) < cDenorm ? 0 : spl0 ;
ospl1 = spl1;
spl1 = b00 * spl1 + b10 * xr10 + b20 * xr20 - a10 * yr10 - a20 * yr20;
xr20 = xr10;
xr10 = ospl1;
yr20 = yr10;
yr10 = abs(spl1) < cDenorm ? 0 : spl1 ;
);
slider1 != 0 ? (
ospl0 = spl0;
spl0 = b0HPF * spl0 + b1HPF * xl1HPF + b2HPF * xl2HPF - a1HPF * yl1HPF - a2HPF * yl2HPF;
xl2HPF = xl1HPF;
xl1HPF = ospl0;
yl2HPF = yl1HPF;
yl1HPF = abs(spl0) < cDenorm ? 0 : spl0 ;
ospl1 = spl1;
spl1 = b0HPF * spl1 + b1HPF * xr1HPF + b2HPF * xr2HPF - a1HPF * yr1HPF - a2HPF * yr2HPF;
xr2HPF = xr1HPF;
xr1HPF = ospl1;
yr2HPF = yr1HPF;
yr1HPF = abs(spl1) < cDenorm ? 0 : spl1 ;
);
spl0 += cDcAdd;
spl1 += cDcAdd;
slider2 != 0 ? (
ospl0 = spl0;
spl0 = b0LS * spl0 + b1LS * xl1LS + b2LS * xl2LS - a1LS * yl1LS - a2LS * yl2LS;
xl2LS = xl1LS;
xl1LS = ospl0;
yl2LS = yl1LS;
yl1LS = spl0;
ospl1 = spl1;
spl1 = b0LS * spl1 + b1LS * xr1LS + b2LS * xr2LS - a1LS * yr1LS - a2LS * yr2LS;
xr2LS = xr1LS;
xr1LS = ospl1;
yr2LS = yr1LS;
yr1LS = spl1;
);
slider3 != 0 ? (
ospl0 = spl0;
spl0 = b0C * spl0 + b1C * xl1C + b2C * xl2C - a1C * yl1C - a2C * yl2C;
xl2C = xl1C;
xl1C = ospl0;
yl2C = yl1C;
yl1C = spl0;
ospl1 = spl1;
spl1 = b0C * spl1 + b1C * xr1C + b2C * xr2C - a1C * yr1C - a2C * yr2C;
xr2C = xr1C;
xr1C = ospl1;
yr2C = yr1C;
yr1C = spl1;
);
slider4 != 0 ? (
ospl0 = spl0;
spl0 = b0D * spl0 + b1D * xl1D + b2D * xl2D - a1D * yl1D - a2D * yl2D;
xl2D = xl1D;
xl1D = ospl0;
yl2D = yl1D;
yl1D = spl0;
ospl1 = spl1;
spl1 = b0D * spl1 + b1D * xr1D + b2D * xr2D - a1D * yr1D - a2D * yr2D;
xr2D = xr1D;
xr1D = ospl1;
yr2D = yr1D;
yr1D = spl1;
);
slider5 != 0 ? (
ospl0 = spl0;
spl0 = b0E * spl0 + b1E * xl1E + b2E * xl2E - a1E * yl1E - a2E * yl2E;
xl2E = xl1E;
xl1E = ospl0;
yl2E = yl1E;
yl1E = spl0;
ospl1 = spl1;
spl1 = b0E * spl1 + b1E * xr1E + b2E * xr2E - a1E * yr1E - a2E * yr2E;
xr2E = xr1E;
xr1E = ospl1;
yr2E = yr1E;
yr1E = spl1;
);
slider6 != 0 ? (
ospl0 = spl0;
spl0 = b0F * spl0 + b1F * xl1F + b2F * xl2F - a1F * yl1F - a2F * yl2F;
xl2F = xl1F;
xl1F = ospl0;
yl2F = yl1F;
yl1F = spl0;
ospl1 = spl1;
spl1 = b0F * spl1 + b1F * xr1F + b2F * xr2F - a1F * yr1F - a2F * yr2F;
xr2F = xr1F;
xr1F = ospl1;
yr2F = yr1F;
yr1F = spl1;
);
slider7 != 0 ? (
ospl0 = spl0;
spl0 = b0G * spl0 + b1G * xl1G + b2G * xl2G - a1G * yl1G - a2G * yl2G;
xl2G = xl1G;
xl1G = ospl0;
yl2G = yl1G;
yl1G = spl0;
ospl1 = spl1;
spl1 = b0G * spl1 + b1G * xr1G + b2G * xr2G - a1G * yr1G - a2G * yr2G;
xr2G = xr1G;
xr1G = ospl1;
yr2G = yr1G;
yr1G = spl1;
);
slider8 != 0 ? (
ospl0 = spl0;
spl0 = b0H * spl0 + b1H * xl1H + b2H * xl2H - a1H * yl1H - a2H * yl2H;
xl2H = xl1H;
xl1H = ospl0;
yl2H = yl1H;
yl1H = spl0;
ospl1 = spl1;
spl1 = b0H * spl1 + b1H * xr1H + b2H * xr2H - a1H * yr1H - a2H * yr2H;
xr2H = xr1H;
xr1H = ospl1;
yr2H = yr1H;
yr1H = spl1;
);
slider9 != 0 ? (
ospl0 = spl0;
spl0 = b0I * spl0 + b1I * xl1I + b2I * xl2I - a1I * yl1I - a2I * yl2I;
xl2I = xl1I;
xl1I = ospl0;
yl2I = yl1I;
yl1I = spl0;
ospl1 = spl1;
spl1 = b0I * spl1 + b1I * xr1I + b2I * xr2I - a1I * yr1I - a2I * yr2I;
xr2I = xr1I;
xr1I = ospl1;
yr2I = yr1I;
yr1I = spl1;
);
slider10 != 0 ? (
ospl0 = spl0;
spl0 = b0J * spl0 + b1J * xl1J + b2J * xl2J - a1J * yl1J - a2J * yl2J;
xl2J = xl1J;
xl1J = ospl0;
yl2J = yl1J;
yl1J = spl0;
ospl1 = spl1;
spl1 = b0J * spl1 + b1J * xr1J + b2J * xr2J - a1J * yr1J - a2J * yr2J;
xr2J = xr1J;
xr1J = ospl1;
yr2J = yr1J;
yr1J = spl1;
);
slider11 != 0 ? (
ospl0 = spl0;
spl0 = b0K * spl0 + b1K * xl1K + b2K * xl2K - a1K * yl1K - a2K * yl2K;
xl2K = xl1K;
xl1K = ospl0;
yl2K = yl1K;
yl1K = spl0;
ospl1 = spl1;
spl1 = b0K * spl1 + b1K * xr1K + b2K * xr2K - a1K * yr1K - a2K * yr2K;
xr2K = xr1K;
xr1K = ospl1;
yr2K = yr1K;
yr1K = spl1;
);
slider12 != 0 ? (
ospl0 = spl0;
spl0 = b0L * spl0 + b1L * xl1L + b2L * xl2L - a1L * yl1L - a2L * yl2L;
xl2L = xl1L;
xl1L = ospl0;
yl2L = yl1L;
yl1L = spl0;
ospl1 = spl1;
spl1 = b0L * spl1 + b1L * xr1L + b2L * xr2L - a1L * yr1L - a2L * yr2L;
xr2L = xr1L;
xr1L = ospl1;
yr2L = yr1L;
yr1L = spl1;
);
slider13 != 0 ? (
ospl0 = spl0;
spl0 = b0M * spl0 + b1M * xl1M + b2M * xl2M - a1M * yl1M - a2M * yl2M;
xl2M = xl1M;
xl1M = ospl0;
yl2M = yl1M;
yl1M = spl0;
ospl1 = spl1;
spl1 = b0M * spl1 + b1M * xr1M + b2M * xr2M - a1M * yr1M - a2M * yr2M;
xr2M = xr1M;
xr1M = ospl1;
yr2M = yr1M;
yr1M = spl1;
);
slider14 != 0 ? (
ospl0 = spl0;
spl0 = b0N * spl0 + b1N * xl1N + b2N * xl2N - a1N * yl1N - a2N * yl2N;
xl2N = xl1N;
xl1N = ospl0;
yl2N = yl1N;
yl1N = spl0;
ospl1 = spl1;
spl1 = b0N * spl1 + b1N * xr1N + b2N * xr2N - a1N * yr1N - a2N * yr2N;
xr2N = xr1N;
xr1N = ospl1;
yr2N = yr1N;
yr1N = spl1;
);
slider15 != 22000 ? (
ospl0 = spl0;
spl0 = b0P * spl0 + b1P * xl1P + b2P * xl2P - a1P * yl1P - a2P * yl2P;
xl2P = xl1P;
xl1P = ospl0;
yl2P = yl1P;
yl1P = spl0;
ospl1 = spl1;
spl1 = b0P * spl1 + b1P * xr1P + b2P * xr2P - a1P * yr1P - a2P * yr2P;
xr2P = xr1P;
xr1P = ospl1;
yr2P = yr1P;
yr1P = spl1;
);
spl0 *= gain;
spl1 *= gain;