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airwindows/plugins/MacVST/Parametric/source/ParametricProc.cpp

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/* ========================================
* Parametric - Parametric.h
* Copyright (c) airwindows, Airwindows uses the MIT license
* ======================================== */
#ifndef __Parametric_H
#include "Parametric.h"
#endif
void Parametric::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= getSampleRate();
high[biqs_freq] = (((pow(A,3)*14500.0)+1500.0)/getSampleRate());
if (high[biqs_freq] < 0.0001) high[biqs_freq] = 0.0001;
high[biqs_nonlin] = B;
high[biqs_level] = (high[biqs_nonlin]*2.0)-1.0;
if (high[biqs_level] > 0.0) high[biqs_level] *= 2.0;
high[biqs_reso] = ((0.5+(high[biqs_nonlin]*0.5)+sqrt(high[biqs_freq]))-(1.0-pow(1.0-C,2.0)))+0.5+(high[biqs_nonlin]*0.5);
double K = tan(M_PI * high[biqs_freq]);
double norm = 1.0 / (1.0 + K / (high[biqs_reso]*1.93185165) + K * K);
high[biqs_a0] = K / (high[biqs_reso]*1.93185165) * norm;
high[biqs_b1] = 2.0 * (K * K - 1.0) * norm;
high[biqs_b2] = (1.0 - K / (high[biqs_reso]*1.93185165) + K * K) * norm;
norm = 1.0 / (1.0 + K / (high[biqs_reso]*0.70710678) + K * K);
high[biqs_c0] = K / (high[biqs_reso]*0.70710678) * norm;
high[biqs_d1] = 2.0 * (K * K - 1.0) * norm;
high[biqs_d2] = (1.0 - K / (high[biqs_reso]*0.70710678) + K * K) * norm;
norm = 1.0 / (1.0 + K / (high[biqs_reso]*0.51763809) + K * K);
high[biqs_e0] = K / (high[biqs_reso]*0.51763809) * norm;
high[biqs_f1] = 2.0 * (K * K - 1.0) * norm;
high[biqs_f2] = (1.0 - K / (high[biqs_reso]*0.51763809) + K * K) * norm;
//high
hmid[biqs_freq] = (((pow(D,3)*6400.0)+600.0)/getSampleRate());
if (hmid[biqs_freq] < 0.0001) hmid[biqs_freq] = 0.0001;
hmid[biqs_nonlin] = E;
hmid[biqs_level] = (hmid[biqs_nonlin]*2.0)-1.0;
if (hmid[biqs_level] > 0.0) hmid[biqs_level] *= 2.0;
hmid[biqs_reso] = ((0.5+(hmid[biqs_nonlin]*0.5)+sqrt(hmid[biqs_freq]))-(1.0-pow(1.0-F,2.0)))+0.5+(hmid[biqs_nonlin]*0.5);
K = tan(M_PI * hmid[biqs_freq]);
norm = 1.0 / (1.0 + K / (hmid[biqs_reso]*1.93185165) + K * K);
hmid[biqs_a0] = K / (hmid[biqs_reso]*1.93185165) * norm;
hmid[biqs_b1] = 2.0 * (K * K - 1.0) * norm;
hmid[biqs_b2] = (1.0 - K / (hmid[biqs_reso]*1.93185165) + K * K) * norm;
norm = 1.0 / (1.0 + K / (hmid[biqs_reso]*0.70710678) + K * K);
hmid[biqs_c0] = K / (hmid[biqs_reso]*0.70710678) * norm;
hmid[biqs_d1] = 2.0 * (K * K - 1.0) * norm;
hmid[biqs_d2] = (1.0 - K / (hmid[biqs_reso]*0.70710678) + K * K) * norm;
norm = 1.0 / (1.0 + K / (hmid[biqs_reso]*0.51763809) + K * K);
hmid[biqs_e0] = K / (hmid[biqs_reso]*0.51763809) * norm;
hmid[biqs_f1] = 2.0 * (K * K - 1.0) * norm;
hmid[biqs_f2] = (1.0 - K / (hmid[biqs_reso]*0.51763809) + K * K) * norm;
//hmid
lmid[biqs_freq] = (((pow(G,3)*2200.0)+20.0)/getSampleRate());
if (lmid[biqs_freq] < 0.00001) lmid[biqs_freq] = 0.00001;
lmid[biqs_nonlin] = H;
lmid[biqs_level] = (lmid[biqs_nonlin]*2.0)-1.0;
if (lmid[biqs_level] > 0.0) lmid[biqs_level] *= 2.0;
lmid[biqs_reso] = ((0.5+(lmid[biqs_nonlin]*0.5)+sqrt(lmid[biqs_freq]))-(1.0-pow(1.0-I,2.0)))+0.5+(lmid[biqs_nonlin]*0.5);
K = tan(M_PI * lmid[biqs_freq]);
norm = 1.0 / (1.0 + K / (lmid[biqs_reso]*1.93185165) + K * K);
lmid[biqs_a0] = K / (lmid[biqs_reso]*1.93185165) * norm;
lmid[biqs_b1] = 2.0 * (K * K - 1.0) * norm;
lmid[biqs_b2] = (1.0 - K / (lmid[biqs_reso]*1.93185165) + K * K) * norm;
norm = 1.0 / (1.0 + K / (lmid[biqs_reso]*0.70710678) + K * K);
lmid[biqs_c0] = K / (lmid[biqs_reso]*0.70710678) * norm;
lmid[biqs_d1] = 2.0 * (K * K - 1.0) * norm;
lmid[biqs_d2] = (1.0 - K / (lmid[biqs_reso]*0.70710678) + K * K) * norm;
norm = 1.0 / (1.0 + K / (lmid[biqs_reso]*0.51763809) + K * K);
lmid[biqs_e0] = K / (lmid[biqs_reso]*0.51763809) * norm;
lmid[biqs_f1] = 2.0 * (K * K - 1.0) * norm;
lmid[biqs_f2] = (1.0 - K / (lmid[biqs_reso]*0.51763809) + K * K) * norm;
//lmid
double wet = J;
while (--sampleFrames >= 0)
{
double inputSampleL = *in1;
double inputSampleR = *in2;
if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
//begin Stacked Biquad With Reversed Neutron Flow L
high[biqs_outL] = inputSampleL * fabs(high[biqs_level]);
high[biqs_dis] = fabs(high[biqs_a0] * (1.0+(high[biqs_outL]*high[biqs_nonlin])));
if (high[biqs_dis] > 1.0) high[biqs_dis] = 1.0;
high[biqs_temp] = (high[biqs_outL] * high[biqs_dis]) + high[biqs_aL1];
high[biqs_aL1] = high[biqs_aL2] - (high[biqs_temp]*high[biqs_b1]);
high[biqs_aL2] = (high[biqs_outL] * -high[biqs_dis]) - (high[biqs_temp]*high[biqs_b2]);
high[biqs_outL] = high[biqs_temp];
high[biqs_dis] = fabs(high[biqs_c0] * (1.0+(high[biqs_outL]*high[biqs_nonlin])));
if (high[biqs_dis] > 1.0) high[biqs_dis] = 1.0;
high[biqs_temp] = (high[biqs_outL] * high[biqs_dis]) + high[biqs_cL1];
high[biqs_cL1] = high[biqs_cL2] - (high[biqs_temp]*high[biqs_d1]);
high[biqs_cL2] = (high[biqs_outL] * -high[biqs_dis]) - (high[biqs_temp]*high[biqs_d2]);
high[biqs_outL] = high[biqs_temp];
high[biqs_dis] = fabs(high[biqs_e0] * (1.0+(high[biqs_outL]*high[biqs_nonlin])));
if (high[biqs_dis] > 1.0) high[biqs_dis] = 1.0;
high[biqs_temp] = (high[biqs_outL] * high[biqs_dis]) + high[biqs_eL1];
high[biqs_eL1] = high[biqs_eL2] - (high[biqs_temp]*high[biqs_f1]);
high[biqs_eL2] = (high[biqs_outL] * -high[biqs_dis]) - (high[biqs_temp]*high[biqs_f2]);
high[biqs_outL] = high[biqs_temp]; high[biqs_outL] *= high[biqs_level];
if (high[biqs_level] > 1.0) high[biqs_outL] *= high[biqs_level];
//end Stacked Biquad With Reversed Neutron Flow L
//begin Stacked Biquad With Reversed Neutron Flow L
hmid[biqs_outL] = inputSampleL * fabs(hmid[biqs_level]);
hmid[biqs_dis] = fabs(hmid[biqs_a0] * (1.0+(hmid[biqs_outL]*hmid[biqs_nonlin])));
if (hmid[biqs_dis] > 1.0) hmid[biqs_dis] = 1.0;
hmid[biqs_temp] = (hmid[biqs_outL] * hmid[biqs_dis]) + hmid[biqs_aL1];
hmid[biqs_aL1] = hmid[biqs_aL2] - (hmid[biqs_temp]*hmid[biqs_b1]);
hmid[biqs_aL2] = (hmid[biqs_outL] * -hmid[biqs_dis]) - (hmid[biqs_temp]*hmid[biqs_b2]);
hmid[biqs_outL] = hmid[biqs_temp];
hmid[biqs_dis] = fabs(hmid[biqs_c0] * (1.0+(hmid[biqs_outL]*hmid[biqs_nonlin])));
if (hmid[biqs_dis] > 1.0) hmid[biqs_dis] = 1.0;
hmid[biqs_temp] = (hmid[biqs_outL] * hmid[biqs_dis]) + hmid[biqs_cL1];
hmid[biqs_cL1] = hmid[biqs_cL2] - (hmid[biqs_temp]*hmid[biqs_d1]);
hmid[biqs_cL2] = (hmid[biqs_outL] * -hmid[biqs_dis]) - (hmid[biqs_temp]*hmid[biqs_d2]);
hmid[biqs_outL] = hmid[biqs_temp];
hmid[biqs_dis] = fabs(hmid[biqs_e0] * (1.0+(hmid[biqs_outL]*hmid[biqs_nonlin])));
if (hmid[biqs_dis] > 1.0) hmid[biqs_dis] = 1.0;
hmid[biqs_temp] = (hmid[biqs_outL] * hmid[biqs_dis]) + hmid[biqs_eL1];
hmid[biqs_eL1] = hmid[biqs_eL2] - (hmid[biqs_temp]*hmid[biqs_f1]);
hmid[biqs_eL2] = (hmid[biqs_outL] * -hmid[biqs_dis]) - (hmid[biqs_temp]*hmid[biqs_f2]);
hmid[biqs_outL] = hmid[biqs_temp]; hmid[biqs_outL] *= hmid[biqs_level];
if (hmid[biqs_level] > 1.0) hmid[biqs_outL] *= hmid[biqs_level];
//end Stacked Biquad With Reversed Neutron Flow L
//begin Stacked Biquad With Reversed Neutron Flow L
lmid[biqs_outL] = inputSampleL * fabs(lmid[biqs_level]);
lmid[biqs_dis] = fabs(lmid[biqs_a0] * (1.0+(lmid[biqs_outL]*lmid[biqs_nonlin])));
if (lmid[biqs_dis] > 1.0) lmid[biqs_dis] = 1.0;
lmid[biqs_temp] = (lmid[biqs_outL] * lmid[biqs_dis]) + lmid[biqs_aL1];
lmid[biqs_aL1] = lmid[biqs_aL2] - (lmid[biqs_temp]*lmid[biqs_b1]);
lmid[biqs_aL2] = (lmid[biqs_outL] * -lmid[biqs_dis]) - (lmid[biqs_temp]*lmid[biqs_b2]);
lmid[biqs_outL] = lmid[biqs_temp];
lmid[biqs_dis] = fabs(lmid[biqs_c0] * (1.0+(lmid[biqs_outL]*lmid[biqs_nonlin])));
if (lmid[biqs_dis] > 1.0) lmid[biqs_dis] = 1.0;
lmid[biqs_temp] = (lmid[biqs_outL] * lmid[biqs_dis]) + lmid[biqs_cL1];
lmid[biqs_cL1] = lmid[biqs_cL2] - (lmid[biqs_temp]*lmid[biqs_d1]);
lmid[biqs_cL2] = (lmid[biqs_outL] * -lmid[biqs_dis]) - (lmid[biqs_temp]*lmid[biqs_d2]);
lmid[biqs_outL] = lmid[biqs_temp];
lmid[biqs_dis] = fabs(lmid[biqs_e0] * (1.0+(lmid[biqs_outL]*lmid[biqs_nonlin])));
if (lmid[biqs_dis] > 1.0) lmid[biqs_dis] = 1.0;
lmid[biqs_temp] = (lmid[biqs_outL] * lmid[biqs_dis]) + lmid[biqs_eL1];
lmid[biqs_eL1] = lmid[biqs_eL2] - (lmid[biqs_temp]*lmid[biqs_f1]);
lmid[biqs_eL2] = (lmid[biqs_outL] * -lmid[biqs_dis]) - (lmid[biqs_temp]*lmid[biqs_f2]);
lmid[biqs_outL] = lmid[biqs_temp]; lmid[biqs_outL] *= lmid[biqs_level];
if (lmid[biqs_level] > 1.0) lmid[biqs_outL] *= lmid[biqs_level];
//end Stacked Biquad With Reversed Neutron Flow L
//begin Stacked Biquad With Reversed Neutron Flow R
high[biqs_outR] = inputSampleR * fabs(high[biqs_level]);
high[biqs_dis] = fabs(high[biqs_a0] * (1.0+(high[biqs_outR]*high[biqs_nonlin])));
if (high[biqs_dis] > 1.0) high[biqs_dis] = 1.0;
high[biqs_temp] = (high[biqs_outR] * high[biqs_dis]) + high[biqs_aR1];
high[biqs_aR1] = high[biqs_aR2] - (high[biqs_temp]*high[biqs_b1]);
high[biqs_aR2] = (high[biqs_outR] * -high[biqs_dis]) - (high[biqs_temp]*high[biqs_b2]);
high[biqs_outR] = high[biqs_temp];
high[biqs_dis] = fabs(high[biqs_c0] * (1.0+(high[biqs_outR]*high[biqs_nonlin])));
if (high[biqs_dis] > 1.0) high[biqs_dis] = 1.0;
high[biqs_temp] = (high[biqs_outR] * high[biqs_dis]) + high[biqs_cR1];
high[biqs_cR1] = high[biqs_cR2] - (high[biqs_temp]*high[biqs_d1]);
high[biqs_cR2] = (high[biqs_outR] * -high[biqs_dis]) - (high[biqs_temp]*high[biqs_d2]);
high[biqs_outR] = high[biqs_temp];
high[biqs_dis] = fabs(high[biqs_e0] * (1.0+(high[biqs_outR]*high[biqs_nonlin])));
if (high[biqs_dis] > 1.0) high[biqs_dis] = 1.0;
high[biqs_temp] = (high[biqs_outR] * high[biqs_dis]) + high[biqs_eR1];
high[biqs_eR1] = high[biqs_eR2] - (high[biqs_temp]*high[biqs_f1]);
high[biqs_eR2] = (high[biqs_outR] * -high[biqs_dis]) - (high[biqs_temp]*high[biqs_f2]);
high[biqs_outR] = high[biqs_temp]; high[biqs_outR] *= high[biqs_level];
if (high[biqs_level] > 1.0) high[biqs_outR] *= high[biqs_level];
//end Stacked Biquad With Reversed Neutron Flow R
//begin Stacked Biquad With Reversed Neutron Flow R
hmid[biqs_outR] = inputSampleR * fabs(hmid[biqs_level]);
hmid[biqs_dis] = fabs(hmid[biqs_a0] * (1.0+(hmid[biqs_outR]*hmid[biqs_nonlin])));
if (hmid[biqs_dis] > 1.0) hmid[biqs_dis] = 1.0;
hmid[biqs_temp] = (hmid[biqs_outR] * hmid[biqs_dis]) + hmid[biqs_aR1];
hmid[biqs_aR1] = hmid[biqs_aR2] - (hmid[biqs_temp]*hmid[biqs_b1]);
hmid[biqs_aR2] = (hmid[biqs_outR] * -hmid[biqs_dis]) - (hmid[biqs_temp]*hmid[biqs_b2]);
hmid[biqs_outR] = hmid[biqs_temp];
hmid[biqs_dis] = fabs(hmid[biqs_c0] * (1.0+(hmid[biqs_outR]*hmid[biqs_nonlin])));
if (hmid[biqs_dis] > 1.0) hmid[biqs_dis] = 1.0;
hmid[biqs_temp] = (hmid[biqs_outR] * hmid[biqs_dis]) + hmid[biqs_cR1];
hmid[biqs_cR1] = hmid[biqs_cR2] - (hmid[biqs_temp]*hmid[biqs_d1]);
hmid[biqs_cR2] = (hmid[biqs_outR] * -hmid[biqs_dis]) - (hmid[biqs_temp]*hmid[biqs_d2]);
hmid[biqs_outR] = hmid[biqs_temp];
hmid[biqs_dis] = fabs(hmid[biqs_e0] * (1.0+(hmid[biqs_outR]*hmid[biqs_nonlin])));
if (hmid[biqs_dis] > 1.0) hmid[biqs_dis] = 1.0;
hmid[biqs_temp] = (hmid[biqs_outR] * hmid[biqs_dis]) + hmid[biqs_eR1];
hmid[biqs_eR1] = hmid[biqs_eR2] - (hmid[biqs_temp]*hmid[biqs_f1]);
hmid[biqs_eR2] = (hmid[biqs_outR] * -hmid[biqs_dis]) - (hmid[biqs_temp]*hmid[biqs_f2]);
hmid[biqs_outR] = hmid[biqs_temp]; hmid[biqs_outR] *= hmid[biqs_level];
if (hmid[biqs_level] > 1.0) hmid[biqs_outR] *= hmid[biqs_level];
//end Stacked Biquad With Reversed Neutron Flow R
//begin Stacked Biquad With Reversed Neutron Flow R
lmid[biqs_outR] = inputSampleR * fabs(lmid[biqs_level]);
lmid[biqs_dis] = fabs(lmid[biqs_a0] * (1.0+(lmid[biqs_outR]*lmid[biqs_nonlin])));
if (lmid[biqs_dis] > 1.0) lmid[biqs_dis] = 1.0;
lmid[biqs_temp] = (lmid[biqs_outR] * lmid[biqs_dis]) + lmid[biqs_aR1];
lmid[biqs_aR1] = lmid[biqs_aR2] - (lmid[biqs_temp]*lmid[biqs_b1]);
lmid[biqs_aR2] = (lmid[biqs_outR] * -lmid[biqs_dis]) - (lmid[biqs_temp]*lmid[biqs_b2]);
lmid[biqs_outR] = lmid[biqs_temp];
lmid[biqs_dis] = fabs(lmid[biqs_c0] * (1.0+(lmid[biqs_outR]*lmid[biqs_nonlin])));
if (lmid[biqs_dis] > 1.0) lmid[biqs_dis] = 1.0;
lmid[biqs_temp] = (lmid[biqs_outR] * lmid[biqs_dis]) + lmid[biqs_cR1];
lmid[biqs_cR1] = lmid[biqs_cR2] - (lmid[biqs_temp]*lmid[biqs_d1]);
lmid[biqs_cR2] = (lmid[biqs_outR] * -lmid[biqs_dis]) - (lmid[biqs_temp]*lmid[biqs_d2]);
lmid[biqs_outR] = lmid[biqs_temp];
lmid[biqs_dis] = fabs(lmid[biqs_e0] * (1.0+(lmid[biqs_outR]*lmid[biqs_nonlin])));
if (lmid[biqs_dis] > 1.0) lmid[biqs_dis] = 1.0;
lmid[biqs_temp] = (lmid[biqs_outR] * lmid[biqs_dis]) + lmid[biqs_eR1];
lmid[biqs_eR1] = lmid[biqs_eR2] - (lmid[biqs_temp]*lmid[biqs_f1]);
lmid[biqs_eR2] = (lmid[biqs_outR] * -lmid[biqs_dis]) - (lmid[biqs_temp]*lmid[biqs_f2]);
lmid[biqs_outR] = lmid[biqs_temp]; lmid[biqs_outR] *= lmid[biqs_level];
if (lmid[biqs_level] > 1.0) lmid[biqs_outR] *= lmid[biqs_level];
//end Stacked Biquad With Reversed Neutron Flow R
double parametric = high[biqs_outL] + hmid[biqs_outL] + lmid[biqs_outL];
inputSampleL += (parametric * wet); //purely a parallel filter stage here
parametric = high[biqs_outR] + hmid[biqs_outR] + lmid[biqs_outR];
inputSampleR += (parametric * wet); //purely a parallel filter stage here
//begin 32 bit stereo floating point dither
int expon; frexpf((float)inputSampleL, &expon);
fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
frexpf((float)inputSampleR, &expon);
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
//end 32 bit stereo floating point dither
*out1 = inputSampleL;
*out2 = inputSampleR;
in1++;
in2++;
out1++;
out2++;
}
}
void Parametric::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
{
double* in1 = inputs[0];
double* in2 = inputs[1];
double* out1 = outputs[0];
double* out2 = outputs[1];
double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= getSampleRate();
high[biqs_freq] = (((pow(A,3)*14500.0)+1500.0)/getSampleRate());
if (high[biqs_freq] < 0.0001) high[biqs_freq] = 0.0001;
high[biqs_nonlin] = B;
high[biqs_level] = (high[biqs_nonlin]*2.0)-1.0;
if (high[biqs_level] > 0.0) high[biqs_level] *= 2.0;
high[biqs_reso] = ((0.5+(high[biqs_nonlin]*0.5)+sqrt(high[biqs_freq]))-(1.0-pow(1.0-C,2.0)))+0.5+(high[biqs_nonlin]*0.5);
double K = tan(M_PI * high[biqs_freq]);
double norm = 1.0 / (1.0 + K / (high[biqs_reso]*1.93185165) + K * K);
high[biqs_a0] = K / (high[biqs_reso]*1.93185165) * norm;
high[biqs_b1] = 2.0 * (K * K - 1.0) * norm;
high[biqs_b2] = (1.0 - K / (high[biqs_reso]*1.93185165) + K * K) * norm;
norm = 1.0 / (1.0 + K / (high[biqs_reso]*0.70710678) + K * K);
high[biqs_c0] = K / (high[biqs_reso]*0.70710678) * norm;
high[biqs_d1] = 2.0 * (K * K - 1.0) * norm;
high[biqs_d2] = (1.0 - K / (high[biqs_reso]*0.70710678) + K * K) * norm;
norm = 1.0 / (1.0 + K / (high[biqs_reso]*0.51763809) + K * K);
high[biqs_e0] = K / (high[biqs_reso]*0.51763809) * norm;
high[biqs_f1] = 2.0 * (K * K - 1.0) * norm;
high[biqs_f2] = (1.0 - K / (high[biqs_reso]*0.51763809) + K * K) * norm;
//high
hmid[biqs_freq] = (((pow(D,3)*6400.0)+600.0)/getSampleRate());
if (hmid[biqs_freq] < 0.0001) hmid[biqs_freq] = 0.0001;
hmid[biqs_nonlin] = E;
hmid[biqs_level] = (hmid[biqs_nonlin]*2.0)-1.0;
if (hmid[biqs_level] > 0.0) hmid[biqs_level] *= 2.0;
hmid[biqs_reso] = ((0.5+(hmid[biqs_nonlin]*0.5)+sqrt(hmid[biqs_freq]))-(1.0-pow(1.0-F,2.0)))+0.5+(hmid[biqs_nonlin]*0.5);
K = tan(M_PI * hmid[biqs_freq]);
norm = 1.0 / (1.0 + K / (hmid[biqs_reso]*1.93185165) + K * K);
hmid[biqs_a0] = K / (hmid[biqs_reso]*1.93185165) * norm;
hmid[biqs_b1] = 2.0 * (K * K - 1.0) * norm;
hmid[biqs_b2] = (1.0 - K / (hmid[biqs_reso]*1.93185165) + K * K) * norm;
norm = 1.0 / (1.0 + K / (hmid[biqs_reso]*0.70710678) + K * K);
hmid[biqs_c0] = K / (hmid[biqs_reso]*0.70710678) * norm;
hmid[biqs_d1] = 2.0 * (K * K - 1.0) * norm;
hmid[biqs_d2] = (1.0 - K / (hmid[biqs_reso]*0.70710678) + K * K) * norm;
norm = 1.0 / (1.0 + K / (hmid[biqs_reso]*0.51763809) + K * K);
hmid[biqs_e0] = K / (hmid[biqs_reso]*0.51763809) * norm;
hmid[biqs_f1] = 2.0 * (K * K - 1.0) * norm;
hmid[biqs_f2] = (1.0 - K / (hmid[biqs_reso]*0.51763809) + K * K) * norm;
//hmid
lmid[biqs_freq] = (((pow(G,3)*2200.0)+20.0)/getSampleRate());
if (lmid[biqs_freq] < 0.00001) lmid[biqs_freq] = 0.00001;
lmid[biqs_nonlin] = H;
lmid[biqs_level] = (lmid[biqs_nonlin]*2.0)-1.0;
if (lmid[biqs_level] > 0.0) lmid[biqs_level] *= 2.0;
lmid[biqs_reso] = ((0.5+(lmid[biqs_nonlin]*0.5)+sqrt(lmid[biqs_freq]))-(1.0-pow(1.0-I,2.0)))+0.5+(lmid[biqs_nonlin]*0.5);
K = tan(M_PI * lmid[biqs_freq]);
norm = 1.0 / (1.0 + K / (lmid[biqs_reso]*1.93185165) + K * K);
lmid[biqs_a0] = K / (lmid[biqs_reso]*1.93185165) * norm;
lmid[biqs_b1] = 2.0 * (K * K - 1.0) * norm;
lmid[biqs_b2] = (1.0 - K / (lmid[biqs_reso]*1.93185165) + K * K) * norm;
norm = 1.0 / (1.0 + K / (lmid[biqs_reso]*0.70710678) + K * K);
lmid[biqs_c0] = K / (lmid[biqs_reso]*0.70710678) * norm;
lmid[biqs_d1] = 2.0 * (K * K - 1.0) * norm;
lmid[biqs_d2] = (1.0 - K / (lmid[biqs_reso]*0.70710678) + K * K) * norm;
norm = 1.0 / (1.0 + K / (lmid[biqs_reso]*0.51763809) + K * K);
lmid[biqs_e0] = K / (lmid[biqs_reso]*0.51763809) * norm;
lmid[biqs_f1] = 2.0 * (K * K - 1.0) * norm;
lmid[biqs_f2] = (1.0 - K / (lmid[biqs_reso]*0.51763809) + K * K) * norm;
//lmid
double wet = J;
while (--sampleFrames >= 0)
{
double inputSampleL = *in1;
double inputSampleR = *in2;
if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
//begin Stacked Biquad With Reversed Neutron Flow L
high[biqs_outL] = inputSampleL * fabs(high[biqs_level]);
high[biqs_dis] = fabs(high[biqs_a0] * (1.0+(high[biqs_outL]*high[biqs_nonlin])));
if (high[biqs_dis] > 1.0) high[biqs_dis] = 1.0;
high[biqs_temp] = (high[biqs_outL] * high[biqs_dis]) + high[biqs_aL1];
high[biqs_aL1] = high[biqs_aL2] - (high[biqs_temp]*high[biqs_b1]);
high[biqs_aL2] = (high[biqs_outL] * -high[biqs_dis]) - (high[biqs_temp]*high[biqs_b2]);
high[biqs_outL] = high[biqs_temp];
high[biqs_dis] = fabs(high[biqs_c0] * (1.0+(high[biqs_outL]*high[biqs_nonlin])));
if (high[biqs_dis] > 1.0) high[biqs_dis] = 1.0;
high[biqs_temp] = (high[biqs_outL] * high[biqs_dis]) + high[biqs_cL1];
high[biqs_cL1] = high[biqs_cL2] - (high[biqs_temp]*high[biqs_d1]);
high[biqs_cL2] = (high[biqs_outL] * -high[biqs_dis]) - (high[biqs_temp]*high[biqs_d2]);
high[biqs_outL] = high[biqs_temp];
high[biqs_dis] = fabs(high[biqs_e0] * (1.0+(high[biqs_outL]*high[biqs_nonlin])));
if (high[biqs_dis] > 1.0) high[biqs_dis] = 1.0;
high[biqs_temp] = (high[biqs_outL] * high[biqs_dis]) + high[biqs_eL1];
high[biqs_eL1] = high[biqs_eL2] - (high[biqs_temp]*high[biqs_f1]);
high[biqs_eL2] = (high[biqs_outL] * -high[biqs_dis]) - (high[biqs_temp]*high[biqs_f2]);
high[biqs_outL] = high[biqs_temp]; high[biqs_outL] *= high[biqs_level];
if (high[biqs_level] > 1.0) high[biqs_outL] *= high[biqs_level];
//end Stacked Biquad With Reversed Neutron Flow L
//begin Stacked Biquad With Reversed Neutron Flow L
hmid[biqs_outL] = inputSampleL * fabs(hmid[biqs_level]);
hmid[biqs_dis] = fabs(hmid[biqs_a0] * (1.0+(hmid[biqs_outL]*hmid[biqs_nonlin])));
if (hmid[biqs_dis] > 1.0) hmid[biqs_dis] = 1.0;
hmid[biqs_temp] = (hmid[biqs_outL] * hmid[biqs_dis]) + hmid[biqs_aL1];
hmid[biqs_aL1] = hmid[biqs_aL2] - (hmid[biqs_temp]*hmid[biqs_b1]);
hmid[biqs_aL2] = (hmid[biqs_outL] * -hmid[biqs_dis]) - (hmid[biqs_temp]*hmid[biqs_b2]);
hmid[biqs_outL] = hmid[biqs_temp];
hmid[biqs_dis] = fabs(hmid[biqs_c0] * (1.0+(hmid[biqs_outL]*hmid[biqs_nonlin])));
if (hmid[biqs_dis] > 1.0) hmid[biqs_dis] = 1.0;
hmid[biqs_temp] = (hmid[biqs_outL] * hmid[biqs_dis]) + hmid[biqs_cL1];
hmid[biqs_cL1] = hmid[biqs_cL2] - (hmid[biqs_temp]*hmid[biqs_d1]);
hmid[biqs_cL2] = (hmid[biqs_outL] * -hmid[biqs_dis]) - (hmid[biqs_temp]*hmid[biqs_d2]);
hmid[biqs_outL] = hmid[biqs_temp];
hmid[biqs_dis] = fabs(hmid[biqs_e0] * (1.0+(hmid[biqs_outL]*hmid[biqs_nonlin])));
if (hmid[biqs_dis] > 1.0) hmid[biqs_dis] = 1.0;
hmid[biqs_temp] = (hmid[biqs_outL] * hmid[biqs_dis]) + hmid[biqs_eL1];
hmid[biqs_eL1] = hmid[biqs_eL2] - (hmid[biqs_temp]*hmid[biqs_f1]);
hmid[biqs_eL2] = (hmid[biqs_outL] * -hmid[biqs_dis]) - (hmid[biqs_temp]*hmid[biqs_f2]);
hmid[biqs_outL] = hmid[biqs_temp]; hmid[biqs_outL] *= hmid[biqs_level];
if (hmid[biqs_level] > 1.0) hmid[biqs_outL] *= hmid[biqs_level];
//end Stacked Biquad With Reversed Neutron Flow L
//begin Stacked Biquad With Reversed Neutron Flow L
lmid[biqs_outL] = inputSampleL * fabs(lmid[biqs_level]);
lmid[biqs_dis] = fabs(lmid[biqs_a0] * (1.0+(lmid[biqs_outL]*lmid[biqs_nonlin])));
if (lmid[biqs_dis] > 1.0) lmid[biqs_dis] = 1.0;
lmid[biqs_temp] = (lmid[biqs_outL] * lmid[biqs_dis]) + lmid[biqs_aL1];
lmid[biqs_aL1] = lmid[biqs_aL2] - (lmid[biqs_temp]*lmid[biqs_b1]);
lmid[biqs_aL2] = (lmid[biqs_outL] * -lmid[biqs_dis]) - (lmid[biqs_temp]*lmid[biqs_b2]);
lmid[biqs_outL] = lmid[biqs_temp];
lmid[biqs_dis] = fabs(lmid[biqs_c0] * (1.0+(lmid[biqs_outL]*lmid[biqs_nonlin])));
if (lmid[biqs_dis] > 1.0) lmid[biqs_dis] = 1.0;
lmid[biqs_temp] = (lmid[biqs_outL] * lmid[biqs_dis]) + lmid[biqs_cL1];
lmid[biqs_cL1] = lmid[biqs_cL2] - (lmid[biqs_temp]*lmid[biqs_d1]);
lmid[biqs_cL2] = (lmid[biqs_outL] * -lmid[biqs_dis]) - (lmid[biqs_temp]*lmid[biqs_d2]);
lmid[biqs_outL] = lmid[biqs_temp];
lmid[biqs_dis] = fabs(lmid[biqs_e0] * (1.0+(lmid[biqs_outL]*lmid[biqs_nonlin])));
if (lmid[biqs_dis] > 1.0) lmid[biqs_dis] = 1.0;
lmid[biqs_temp] = (lmid[biqs_outL] * lmid[biqs_dis]) + lmid[biqs_eL1];
lmid[biqs_eL1] = lmid[biqs_eL2] - (lmid[biqs_temp]*lmid[biqs_f1]);
lmid[biqs_eL2] = (lmid[biqs_outL] * -lmid[biqs_dis]) - (lmid[biqs_temp]*lmid[biqs_f2]);
lmid[biqs_outL] = lmid[biqs_temp]; lmid[biqs_outL] *= lmid[biqs_level];
if (lmid[biqs_level] > 1.0) lmid[biqs_outL] *= lmid[biqs_level];
//end Stacked Biquad With Reversed Neutron Flow L
//begin Stacked Biquad With Reversed Neutron Flow R
high[biqs_outR] = inputSampleR * fabs(high[biqs_level]);
high[biqs_dis] = fabs(high[biqs_a0] * (1.0+(high[biqs_outR]*high[biqs_nonlin])));
if (high[biqs_dis] > 1.0) high[biqs_dis] = 1.0;
high[biqs_temp] = (high[biqs_outR] * high[biqs_dis]) + high[biqs_aR1];
high[biqs_aR1] = high[biqs_aR2] - (high[biqs_temp]*high[biqs_b1]);
high[biqs_aR2] = (high[biqs_outR] * -high[biqs_dis]) - (high[biqs_temp]*high[biqs_b2]);
high[biqs_outR] = high[biqs_temp];
high[biqs_dis] = fabs(high[biqs_c0] * (1.0+(high[biqs_outR]*high[biqs_nonlin])));
if (high[biqs_dis] > 1.0) high[biqs_dis] = 1.0;
high[biqs_temp] = (high[biqs_outR] * high[biqs_dis]) + high[biqs_cR1];
high[biqs_cR1] = high[biqs_cR2] - (high[biqs_temp]*high[biqs_d1]);
high[biqs_cR2] = (high[biqs_outR] * -high[biqs_dis]) - (high[biqs_temp]*high[biqs_d2]);
high[biqs_outR] = high[biqs_temp];
high[biqs_dis] = fabs(high[biqs_e0] * (1.0+(high[biqs_outR]*high[biqs_nonlin])));
if (high[biqs_dis] > 1.0) high[biqs_dis] = 1.0;
high[biqs_temp] = (high[biqs_outR] * high[biqs_dis]) + high[biqs_eR1];
high[biqs_eR1] = high[biqs_eR2] - (high[biqs_temp]*high[biqs_f1]);
high[biqs_eR2] = (high[biqs_outR] * -high[biqs_dis]) - (high[biqs_temp]*high[biqs_f2]);
high[biqs_outR] = high[biqs_temp]; high[biqs_outR] *= high[biqs_level];
if (high[biqs_level] > 1.0) high[biqs_outR] *= high[biqs_level];
//end Stacked Biquad With Reversed Neutron Flow R
//begin Stacked Biquad With Reversed Neutron Flow R
hmid[biqs_outR] = inputSampleR * fabs(hmid[biqs_level]);
hmid[biqs_dis] = fabs(hmid[biqs_a0] * (1.0+(hmid[biqs_outR]*hmid[biqs_nonlin])));
if (hmid[biqs_dis] > 1.0) hmid[biqs_dis] = 1.0;
hmid[biqs_temp] = (hmid[biqs_outR] * hmid[biqs_dis]) + hmid[biqs_aR1];
hmid[biqs_aR1] = hmid[biqs_aR2] - (hmid[biqs_temp]*hmid[biqs_b1]);
hmid[biqs_aR2] = (hmid[biqs_outR] * -hmid[biqs_dis]) - (hmid[biqs_temp]*hmid[biqs_b2]);
hmid[biqs_outR] = hmid[biqs_temp];
hmid[biqs_dis] = fabs(hmid[biqs_c0] * (1.0+(hmid[biqs_outR]*hmid[biqs_nonlin])));
if (hmid[biqs_dis] > 1.0) hmid[biqs_dis] = 1.0;
hmid[biqs_temp] = (hmid[biqs_outR] * hmid[biqs_dis]) + hmid[biqs_cR1];
hmid[biqs_cR1] = hmid[biqs_cR2] - (hmid[biqs_temp]*hmid[biqs_d1]);
hmid[biqs_cR2] = (hmid[biqs_outR] * -hmid[biqs_dis]) - (hmid[biqs_temp]*hmid[biqs_d2]);
hmid[biqs_outR] = hmid[biqs_temp];
hmid[biqs_dis] = fabs(hmid[biqs_e0] * (1.0+(hmid[biqs_outR]*hmid[biqs_nonlin])));
if (hmid[biqs_dis] > 1.0) hmid[biqs_dis] = 1.0;
hmid[biqs_temp] = (hmid[biqs_outR] * hmid[biqs_dis]) + hmid[biqs_eR1];
hmid[biqs_eR1] = hmid[biqs_eR2] - (hmid[biqs_temp]*hmid[biqs_f1]);
hmid[biqs_eR2] = (hmid[biqs_outR] * -hmid[biqs_dis]) - (hmid[biqs_temp]*hmid[biqs_f2]);
hmid[biqs_outR] = hmid[biqs_temp]; hmid[biqs_outR] *= hmid[biqs_level];
if (hmid[biqs_level] > 1.0) hmid[biqs_outR] *= hmid[biqs_level];
//end Stacked Biquad With Reversed Neutron Flow R
//begin Stacked Biquad With Reversed Neutron Flow R
lmid[biqs_outR] = inputSampleR * fabs(lmid[biqs_level]);
lmid[biqs_dis] = fabs(lmid[biqs_a0] * (1.0+(lmid[biqs_outR]*lmid[biqs_nonlin])));
if (lmid[biqs_dis] > 1.0) lmid[biqs_dis] = 1.0;
lmid[biqs_temp] = (lmid[biqs_outR] * lmid[biqs_dis]) + lmid[biqs_aR1];
lmid[biqs_aR1] = lmid[biqs_aR2] - (lmid[biqs_temp]*lmid[biqs_b1]);
lmid[biqs_aR2] = (lmid[biqs_outR] * -lmid[biqs_dis]) - (lmid[biqs_temp]*lmid[biqs_b2]);
lmid[biqs_outR] = lmid[biqs_temp];
lmid[biqs_dis] = fabs(lmid[biqs_c0] * (1.0+(lmid[biqs_outR]*lmid[biqs_nonlin])));
if (lmid[biqs_dis] > 1.0) lmid[biqs_dis] = 1.0;
lmid[biqs_temp] = (lmid[biqs_outR] * lmid[biqs_dis]) + lmid[biqs_cR1];
lmid[biqs_cR1] = lmid[biqs_cR2] - (lmid[biqs_temp]*lmid[biqs_d1]);
lmid[biqs_cR2] = (lmid[biqs_outR] * -lmid[biqs_dis]) - (lmid[biqs_temp]*lmid[biqs_d2]);
lmid[biqs_outR] = lmid[biqs_temp];
lmid[biqs_dis] = fabs(lmid[biqs_e0] * (1.0+(lmid[biqs_outR]*lmid[biqs_nonlin])));
if (lmid[biqs_dis] > 1.0) lmid[biqs_dis] = 1.0;
lmid[biqs_temp] = (lmid[biqs_outR] * lmid[biqs_dis]) + lmid[biqs_eR1];
lmid[biqs_eR1] = lmid[biqs_eR2] - (lmid[biqs_temp]*lmid[biqs_f1]);
lmid[biqs_eR2] = (lmid[biqs_outR] * -lmid[biqs_dis]) - (lmid[biqs_temp]*lmid[biqs_f2]);
lmid[biqs_outR] = lmid[biqs_temp]; lmid[biqs_outR] *= lmid[biqs_level];
if (lmid[biqs_level] > 1.0) lmid[biqs_outR] *= lmid[biqs_level];
//end Stacked Biquad With Reversed Neutron Flow R
double parametric = high[biqs_outL] + hmid[biqs_outL] + lmid[biqs_outL];
inputSampleL += (parametric * wet); //purely a parallel filter stage here
parametric = high[biqs_outR] + hmid[biqs_outR] + lmid[biqs_outR];
inputSampleR += (parametric * wet); //purely a parallel filter stage here
//begin 64 bit stereo floating point dither
//int expon; frexp((double)inputSampleL, &expon);
fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
//inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
//frexp((double)inputSampleR, &expon);
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
//inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
//end 64 bit stereo floating point dither
*out1 = inputSampleL;
*out2 = inputSampleR;
in1++;
in2++;
out1++;
out2++;
}
}
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