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airwindows/plugins/MacVST/Isolator3/source/Isolator3Proc.cpp
Christopher Johnson b77a11bab5 ToTape7
2024-08-18 16:05:41 -04:00

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/* ========================================
* Isolator3 - Isolator3.h
* Copyright (c) airwindows, Airwindows uses the MIT license
* ======================================== */
#ifndef __Isolator3_H
#include "Isolator3.h"
#endif
void Isolator3::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
VstInt32 inFramesToProcess = sampleFrames; //vst doesn't give us this as a separate variable so we'll make it
double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= getSampleRate();
int spacing = floor(overallscale); //should give us working basic scaling, usually 2 or 4
if (spacing < 1) spacing = 1; if (spacing > 16) spacing = 16;
double f = A;
double q = B;
double isoFreq = ((f*2.0)*(1.0-q))+(f*q);
double hisoFreq = (((f*2.0)-1.0)*(1.0-q))+(f*q);
if (isoFreq > 1.0) isoFreq = 1.0;
if (hisoFreq < 0.0) hisoFreq = 0.0;
biquadA[biq_freq] = pow(isoFreq,(2.0*sqrt(overallscale)))*0.4999;
if (biquadA[biq_freq] < 0.00025) biquadA[biq_freq] = 0.00025;
biquadG[biq_freq] = biquadF[biq_freq] = biquadE[biq_freq] = biquadD[biq_freq] = biquadC[biq_freq] = biquadB[biq_freq] = biquadA[biq_freq];
hiquadA[biq_freq] = pow(hisoFreq,(2.0*sqrt(overallscale)))*0.4999;
if (hiquadA[biq_freq] < 0.00025) hiquadA[biq_freq] = 0.00025;
hiquadG[biq_freq] = hiquadF[biq_freq] = hiquadE[biq_freq] = hiquadD[biq_freq] = hiquadC[biq_freq] = hiquadB[biq_freq] = hiquadA[biq_freq];
hiquadA[biq_reso] = biquadA[biq_reso] = 4.46570214;
hiquadB[biq_reso] = biquadB[biq_reso] = 1.51387132;
hiquadC[biq_reso] = biquadC[biq_reso] = 0.93979296;
hiquadD[biq_reso] = biquadD[biq_reso] = 0.70710678;
hiquadE[biq_reso] = biquadE[biq_reso] = 0.59051105;
hiquadF[biq_reso] = biquadF[biq_reso] = 0.52972649;
hiquadG[biq_reso] = biquadG[biq_reso] = 0.50316379;
biquadA[biq_aA0] = biquadA[biq_aB0];
biquadA[biq_aA1] = biquadA[biq_aB1];
biquadA[biq_aA2] = biquadA[biq_aB2];
biquadA[biq_bA1] = biquadA[biq_bB1];
biquadA[biq_bA2] = biquadA[biq_bB2];
biquadB[biq_aA0] = biquadB[biq_aB0];
biquadB[biq_aA1] = biquadB[biq_aB1];
biquadB[biq_aA2] = biquadB[biq_aB2];
biquadB[biq_bA1] = biquadB[biq_bB1];
biquadB[biq_bA2] = biquadB[biq_bB2];
biquadC[biq_aA0] = biquadC[biq_aB0];
biquadC[biq_aA1] = biquadC[biq_aB1];
biquadC[biq_aA2] = biquadC[biq_aB2];
biquadC[biq_bA1] = biquadC[biq_bB1];
biquadC[biq_bA2] = biquadC[biq_bB2];
biquadD[biq_aA0] = biquadD[biq_aB0];
biquadD[biq_aA1] = biquadD[biq_aB1];
biquadD[biq_aA2] = biquadD[biq_aB2];
biquadD[biq_bA1] = biquadD[biq_bB1];
biquadD[biq_bA2] = biquadD[biq_bB2];
biquadE[biq_aA0] = biquadE[biq_aB0];
biquadE[biq_aA1] = biquadE[biq_aB1];
biquadE[biq_aA2] = biquadE[biq_aB2];
biquadE[biq_bA1] = biquadE[biq_bB1];
biquadE[biq_bA2] = biquadE[biq_bB2];
biquadF[biq_aA0] = biquadF[biq_aB0];
biquadF[biq_aA1] = biquadF[biq_aB1];
biquadF[biq_aA2] = biquadF[biq_aB2];
biquadF[biq_bA1] = biquadF[biq_bB1];
biquadF[biq_bA2] = biquadF[biq_bB2];
biquadG[biq_aA0] = biquadG[biq_aB0];
biquadG[biq_aA1] = biquadG[biq_aB1];
biquadG[biq_aA2] = biquadG[biq_aB2];
biquadG[biq_bA1] = biquadG[biq_bB1];
biquadG[biq_bA2] = biquadG[biq_bB2];
hiquadA[biq_aA0] = hiquadA[biq_aB0];
hiquadA[biq_aA1] = hiquadA[biq_aB1];
hiquadA[biq_aA2] = hiquadA[biq_aB2];
hiquadA[biq_bA1] = hiquadA[biq_bB1];
hiquadA[biq_bA2] = hiquadA[biq_bB2];
hiquadB[biq_aA0] = hiquadB[biq_aB0];
hiquadB[biq_aA1] = hiquadB[biq_aB1];
hiquadB[biq_aA2] = hiquadB[biq_aB2];
hiquadB[biq_bA1] = hiquadB[biq_bB1];
hiquadB[biq_bA2] = hiquadB[biq_bB2];
hiquadC[biq_aA0] = hiquadC[biq_aB0];
hiquadC[biq_aA1] = hiquadC[biq_aB1];
hiquadC[biq_aA2] = hiquadC[biq_aB2];
hiquadC[biq_bA1] = hiquadC[biq_bB1];
hiquadC[biq_bA2] = hiquadC[biq_bB2];
hiquadD[biq_aA0] = hiquadD[biq_aB0];
hiquadD[biq_aA1] = hiquadD[biq_aB1];
hiquadD[biq_aA2] = hiquadD[biq_aB2];
hiquadD[biq_bA1] = hiquadD[biq_bB1];
hiquadD[biq_bA2] = hiquadD[biq_bB2];
hiquadE[biq_aA0] = hiquadE[biq_aB0];
hiquadE[biq_aA1] = hiquadE[biq_aB1];
hiquadE[biq_aA2] = hiquadE[biq_aB2];
hiquadE[biq_bA1] = hiquadE[biq_bB1];
hiquadE[biq_bA2] = hiquadE[biq_bB2];
hiquadF[biq_aA0] = hiquadF[biq_aB0];
hiquadF[biq_aA1] = hiquadF[biq_aB1];
hiquadF[biq_aA2] = hiquadF[biq_aB2];
hiquadF[biq_bA1] = hiquadF[biq_bB1];
hiquadF[biq_bA2] = hiquadF[biq_bB2];
hiquadG[biq_aA0] = hiquadG[biq_aB0];
hiquadG[biq_aA1] = hiquadG[biq_aB1];
hiquadG[biq_aA2] = hiquadG[biq_aB2];
hiquadG[biq_bA1] = hiquadG[biq_bB1];
hiquadG[biq_bA2] = hiquadG[biq_bB2];
//previous run through the buffer is still in the filter, so we move it
//to the A section and now it's the new starting point.
double K = tan(M_PI * biquadA[biq_freq]);
double norm = 1.0 / (1.0 + K / biquadA[biq_reso] + K * K);
biquadA[biq_aB0] = K * K * norm;
biquadA[biq_aB1] = 2.0 * biquadA[biq_aB0];
biquadA[biq_aB2] = biquadA[biq_aB0];
biquadA[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadA[biq_bB2] = (1.0 - K / biquadA[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadB[biq_freq]);
norm = 1.0 / (1.0 + K / biquadB[biq_reso] + K * K);
biquadB[biq_aB0] = K * K * norm;
biquadB[biq_aB1] = 2.0 * biquadB[biq_aB0];
biquadB[biq_aB2] = biquadB[biq_aB0];
biquadB[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadB[biq_bB2] = (1.0 - K / biquadB[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadC[biq_freq]);
norm = 1.0 / (1.0 + K / biquadC[biq_reso] + K * K);
biquadC[biq_aB0] = K * K * norm;
biquadC[biq_aB1] = 2.0 * biquadC[biq_aB0];
biquadC[biq_aB2] = biquadC[biq_aB0];
biquadC[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadC[biq_bB2] = (1.0 - K / biquadC[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadD[biq_freq]);
norm = 1.0 / (1.0 + K / biquadD[biq_reso] + K * K);
biquadD[biq_aB0] = K * K * norm;
biquadD[biq_aB1] = 2.0 * biquadD[biq_aB0];
biquadD[biq_aB2] = biquadD[biq_aB0];
biquadD[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadD[biq_bB2] = (1.0 - K / biquadD[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadE[biq_freq]);
norm = 1.0 / (1.0 + K / biquadE[biq_reso] + K * K);
biquadE[biq_aB0] = K * K * norm;
biquadE[biq_aB1] = 2.0 * biquadE[biq_aB0];
biquadE[biq_aB2] = biquadE[biq_aB0];
biquadE[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadE[biq_bB2] = (1.0 - K / biquadE[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadF[biq_freq]);
norm = 1.0 / (1.0 + K / biquadF[biq_reso] + K * K);
biquadF[biq_aB0] = K * K * norm;
biquadF[biq_aB1] = 2.0 * biquadF[biq_aB0];
biquadF[biq_aB2] = biquadF[biq_aB0];
biquadF[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadF[biq_bB2] = (1.0 - K / biquadF[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadG[biq_freq]);
norm = 1.0 / (1.0 + K / biquadG[biq_reso] + K * K);
biquadG[biq_aB0] = K * K * norm;
biquadG[biq_aB1] = 2.0 * biquadG[biq_aB0];
biquadG[biq_aB2] = biquadG[biq_aB0];
biquadG[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadG[biq_bB2] = (1.0 - K / biquadG[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadA[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadA[biq_reso] + K * K);
hiquadA[biq_aB0] = K * K * norm;
hiquadA[biq_aB1] = 2.0 * hiquadA[biq_aB0];
hiquadA[biq_aB2] = hiquadA[biq_aB0];
hiquadA[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadA[biq_bB2] = (1.0 - K / hiquadA[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadB[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadB[biq_reso] + K * K);
hiquadB[biq_aB0] = K * K * norm;
hiquadB[biq_aB1] = 2.0 * hiquadB[biq_aB0];
hiquadB[biq_aB2] = hiquadB[biq_aB0];
hiquadB[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadB[biq_bB2] = (1.0 - K / hiquadB[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadC[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadC[biq_reso] + K * K);
hiquadC[biq_aB0] = K * K * norm;
hiquadC[biq_aB1] = 2.0 * hiquadC[biq_aB0];
hiquadC[biq_aB2] = hiquadC[biq_aB0];
hiquadC[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadC[biq_bB2] = (1.0 - K / hiquadC[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadD[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadD[biq_reso] + K * K);
hiquadD[biq_aB0] = K * K * norm;
hiquadD[biq_aB1] = 2.0 * hiquadD[biq_aB0];
hiquadD[biq_aB2] = hiquadD[biq_aB0];
hiquadD[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadD[biq_bB2] = (1.0 - K / hiquadD[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadE[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadE[biq_reso] + K * K);
hiquadE[biq_aB0] = K * K * norm;
hiquadE[biq_aB1] = 2.0 * hiquadE[biq_aB0];
hiquadE[biq_aB2] = hiquadE[biq_aB0];
hiquadE[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadE[biq_bB2] = (1.0 - K / hiquadE[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadF[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadF[biq_reso] + K * K);
hiquadF[biq_aB0] = K * K * norm;
hiquadF[biq_aB1] = 2.0 * hiquadF[biq_aB0];
hiquadF[biq_aB2] = hiquadF[biq_aB0];
hiquadF[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadF[biq_bB2] = (1.0 - K / hiquadF[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadG[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadG[biq_reso] + K * K);
hiquadG[biq_aB0] = K * K * norm;
hiquadG[biq_aB1] = 2.0 * hiquadG[biq_aB0];
hiquadG[biq_aB2] = hiquadG[biq_aB0];
hiquadG[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadG[biq_bB2] = (1.0 - K / hiquadG[biq_reso] + K * K) * norm;
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;
double drySampleL = inputSampleL;
double drySampleR = inputSampleR;
double temp = (double)sampleFrames/inFramesToProcess;
hiquadA[biq_a0] = (hiquadA[biq_aA0]*temp)+(hiquadA[biq_aB0]*(1.0-temp));
hiquadA[biq_a1] = (hiquadA[biq_aA1]*temp)+(hiquadA[biq_aB1]*(1.0-temp));
hiquadA[biq_a2] = (hiquadA[biq_aA2]*temp)+(hiquadA[biq_aB2]*(1.0-temp));
hiquadA[biq_b1] = (hiquadA[biq_bA1]*temp)+(hiquadA[biq_bB1]*(1.0-temp));
hiquadA[biq_b2] = (hiquadA[biq_bA2]*temp)+(hiquadA[biq_bB2]*(1.0-temp));
hiquadB[biq_a0] = (hiquadB[biq_aA0]*temp)+(hiquadB[biq_aB0]*(1.0-temp));
hiquadB[biq_a1] = (hiquadB[biq_aA1]*temp)+(hiquadB[biq_aB1]*(1.0-temp));
hiquadB[biq_a2] = (hiquadB[biq_aA2]*temp)+(hiquadB[biq_aB2]*(1.0-temp));
hiquadB[biq_b1] = (hiquadB[biq_bA1]*temp)+(hiquadB[biq_bB1]*(1.0-temp));
hiquadB[biq_b2] = (hiquadB[biq_bA2]*temp)+(hiquadB[biq_bB2]*(1.0-temp));
hiquadC[biq_a0] = (hiquadC[biq_aA0]*temp)+(hiquadC[biq_aB0]*(1.0-temp));
hiquadC[biq_a1] = (hiquadC[biq_aA1]*temp)+(hiquadC[biq_aB1]*(1.0-temp));
hiquadC[biq_a2] = (hiquadC[biq_aA2]*temp)+(hiquadC[biq_aB2]*(1.0-temp));
hiquadC[biq_b1] = (hiquadC[biq_bA1]*temp)+(hiquadC[biq_bB1]*(1.0-temp));
hiquadC[biq_b2] = (hiquadC[biq_bA2]*temp)+(hiquadC[biq_bB2]*(1.0-temp));
hiquadD[biq_a0] = (hiquadD[biq_aA0]*temp)+(hiquadD[biq_aB0]*(1.0-temp));
hiquadD[biq_a1] = (hiquadD[biq_aA1]*temp)+(hiquadD[biq_aB1]*(1.0-temp));
hiquadD[biq_a2] = (hiquadD[biq_aA2]*temp)+(hiquadD[biq_aB2]*(1.0-temp));
hiquadD[biq_b1] = (hiquadD[biq_bA1]*temp)+(hiquadD[biq_bB1]*(1.0-temp));
hiquadD[biq_b2] = (hiquadD[biq_bA2]*temp)+(hiquadD[biq_bB2]*(1.0-temp));
hiquadE[biq_a0] = (hiquadE[biq_aA0]*temp)+(hiquadE[biq_aB0]*(1.0-temp));
hiquadE[biq_a1] = (hiquadE[biq_aA1]*temp)+(hiquadE[biq_aB1]*(1.0-temp));
hiquadE[biq_a2] = (hiquadE[biq_aA2]*temp)+(hiquadE[biq_aB2]*(1.0-temp));
hiquadE[biq_b1] = (hiquadE[biq_bA1]*temp)+(hiquadE[biq_bB1]*(1.0-temp));
hiquadE[biq_b2] = (hiquadE[biq_bA2]*temp)+(hiquadE[biq_bB2]*(1.0-temp));
hiquadF[biq_a0] = (hiquadF[biq_aA0]*temp)+(hiquadF[biq_aB0]*(1.0-temp));
hiquadF[biq_a1] = (hiquadF[biq_aA1]*temp)+(hiquadF[biq_aB1]*(1.0-temp));
hiquadF[biq_a2] = (hiquadF[biq_aA2]*temp)+(hiquadF[biq_aB2]*(1.0-temp));
hiquadF[biq_b1] = (hiquadF[biq_bA1]*temp)+(hiquadF[biq_bB1]*(1.0-temp));
hiquadF[biq_b2] = (hiquadF[biq_bA2]*temp)+(hiquadF[biq_bB2]*(1.0-temp));
hiquadG[biq_a0] = (hiquadG[biq_aA0]*temp)+(hiquadG[biq_aB0]*(1.0-temp));
hiquadG[biq_a1] = (hiquadG[biq_aA1]*temp)+(hiquadG[biq_aB1]*(1.0-temp));
hiquadG[biq_a2] = (hiquadG[biq_aA2]*temp)+(hiquadG[biq_aB2]*(1.0-temp));
hiquadG[biq_b1] = (hiquadG[biq_bA1]*temp)+(hiquadG[biq_bB1]*(1.0-temp));
hiquadG[biq_b2] = (hiquadG[biq_bA2]*temp)+(hiquadG[biq_bB2]*(1.0-temp));
//this is the interpolation code for the hiquad
double outSample = (inputSampleL * hiquadA[biq_a0]) + hiquadA[biq_sL1];
hiquadA[biq_sL1] = (inputSampleL * hiquadA[biq_a1]) - (outSample * hiquadA[biq_b1]) + hiquadA[biq_sL2];
hiquadA[biq_sL2] = (inputSampleL * hiquadA[biq_a2]) - (outSample * hiquadA[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * hiquadA[biq_a0]) + hiquadA[biq_sR1];
hiquadA[biq_sR1] = (inputSampleR * hiquadA[biq_a1]) - (outSample * hiquadA[biq_b1]) + hiquadA[biq_sR2];
hiquadA[biq_sR2] = (inputSampleR * hiquadA[biq_a2]) - (outSample * hiquadA[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * hiquadB[biq_a0]) + hiquadB[biq_sL1];
hiquadB[biq_sL1] = (inputSampleL * hiquadB[biq_a1]) - (outSample * hiquadB[biq_b1]) + hiquadB[biq_sL2];
hiquadB[biq_sL2] = (inputSampleL * hiquadB[biq_a2]) - (outSample * hiquadB[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * hiquadB[biq_a0]) + hiquadB[biq_sR1];
hiquadB[biq_sR1] = (inputSampleR * hiquadB[biq_a1]) - (outSample * hiquadB[biq_b1]) + hiquadB[biq_sR2];
hiquadB[biq_sR2] = (inputSampleR * hiquadB[biq_a2]) - (outSample * hiquadB[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * hiquadC[biq_a0]) + hiquadC[biq_sL1];
hiquadC[biq_sL1] = (inputSampleL * hiquadC[biq_a1]) - (outSample * hiquadC[biq_b1]) + hiquadC[biq_sL2];
hiquadC[biq_sL2] = (inputSampleL * hiquadC[biq_a2]) - (outSample * hiquadC[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * hiquadC[biq_a0]) + hiquadC[biq_sR1];
hiquadC[biq_sR1] = (inputSampleR * hiquadC[biq_a1]) - (outSample * hiquadC[biq_b1]) + hiquadC[biq_sR2];
hiquadC[biq_sR2] = (inputSampleR * hiquadC[biq_a2]) - (outSample * hiquadC[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * hiquadD[biq_a0]) + hiquadD[biq_sL1];
hiquadD[biq_sL1] = (inputSampleL * hiquadD[biq_a1]) - (outSample * hiquadD[biq_b1]) + hiquadD[biq_sL2];
hiquadD[biq_sL2] = (inputSampleL * hiquadD[biq_a2]) - (outSample * hiquadD[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * hiquadD[biq_a0]) + hiquadD[biq_sR1];
hiquadD[biq_sR1] = (inputSampleR * hiquadD[biq_a1]) - (outSample * hiquadD[biq_b1]) + hiquadD[biq_sR2];
hiquadD[biq_sR2] = (inputSampleR * hiquadD[biq_a2]) - (outSample * hiquadD[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * hiquadE[biq_a0]) + hiquadE[biq_sL1];
hiquadE[biq_sL1] = (inputSampleL * hiquadE[biq_a1]) - (outSample * hiquadE[biq_b1]) + hiquadE[biq_sL2];
hiquadE[biq_sL2] = (inputSampleL * hiquadE[biq_a2]) - (outSample * hiquadE[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * hiquadE[biq_a0]) + hiquadE[biq_sR1];
hiquadE[biq_sR1] = (inputSampleR * hiquadE[biq_a1]) - (outSample * hiquadE[biq_b1]) + hiquadE[biq_sR2];
hiquadE[biq_sR2] = (inputSampleR * hiquadE[biq_a2]) - (outSample * hiquadE[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * hiquadF[biq_a0]) + hiquadF[biq_sL1];
hiquadF[biq_sL1] = (inputSampleL * hiquadF[biq_a1]) - (outSample * hiquadF[biq_b1]) + hiquadF[biq_sL2];
hiquadF[biq_sL2] = (inputSampleL * hiquadF[biq_a2]) - (outSample * hiquadF[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * hiquadF[biq_a0]) + hiquadF[biq_sR1];
hiquadF[biq_sR1] = (inputSampleR * hiquadF[biq_a1]) - (outSample * hiquadF[biq_b1]) + hiquadF[biq_sR2];
hiquadF[biq_sR2] = (inputSampleR * hiquadF[biq_a2]) - (outSample * hiquadF[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * hiquadG[biq_a0]) + hiquadG[biq_sL1];
hiquadG[biq_sL1] = (inputSampleL * hiquadG[biq_a1]) - (outSample * hiquadG[biq_b1]) + hiquadG[biq_sL2];
hiquadG[biq_sL2] = (inputSampleL * hiquadG[biq_a2]) - (outSample * hiquadG[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * hiquadG[biq_a0]) + hiquadG[biq_sR1];
hiquadG[biq_sR1] = (inputSampleR * hiquadG[biq_a1]) - (outSample * hiquadG[biq_b1]) + hiquadG[biq_sR2];
hiquadG[biq_sR2] = (inputSampleR * hiquadG[biq_a2]) - (outSample * hiquadG[biq_b2]);
inputSampleR = outSample;
inputSampleL = (drySampleL - inputSampleL);
inputSampleR = (drySampleR - inputSampleR);
biquadA[biq_a0] = (biquadA[biq_aA0]*temp)+(biquadA[biq_aB0]*(1.0-temp));
biquadA[biq_a1] = (biquadA[biq_aA1]*temp)+(biquadA[biq_aB1]*(1.0-temp));
biquadA[biq_a2] = (biquadA[biq_aA2]*temp)+(biquadA[biq_aB2]*(1.0-temp));
biquadA[biq_b1] = (biquadA[biq_bA1]*temp)+(biquadA[biq_bB1]*(1.0-temp));
biquadA[biq_b2] = (biquadA[biq_bA2]*temp)+(biquadA[biq_bB2]*(1.0-temp));
biquadB[biq_a0] = (biquadB[biq_aA0]*temp)+(biquadB[biq_aB0]*(1.0-temp));
biquadB[biq_a1] = (biquadB[biq_aA1]*temp)+(biquadB[biq_aB1]*(1.0-temp));
biquadB[biq_a2] = (biquadB[biq_aA2]*temp)+(biquadB[biq_aB2]*(1.0-temp));
biquadB[biq_b1] = (biquadB[biq_bA1]*temp)+(biquadB[biq_bB1]*(1.0-temp));
biquadB[biq_b2] = (biquadB[biq_bA2]*temp)+(biquadB[biq_bB2]*(1.0-temp));
biquadC[biq_a0] = (biquadC[biq_aA0]*temp)+(biquadC[biq_aB0]*(1.0-temp));
biquadC[biq_a1] = (biquadC[biq_aA1]*temp)+(biquadC[biq_aB1]*(1.0-temp));
biquadC[biq_a2] = (biquadC[biq_aA2]*temp)+(biquadC[biq_aB2]*(1.0-temp));
biquadC[biq_b1] = (biquadC[biq_bA1]*temp)+(biquadC[biq_bB1]*(1.0-temp));
biquadC[biq_b2] = (biquadC[biq_bA2]*temp)+(biquadC[biq_bB2]*(1.0-temp));
biquadD[biq_a0] = (biquadD[biq_aA0]*temp)+(biquadD[biq_aB0]*(1.0-temp));
biquadD[biq_a1] = (biquadD[biq_aA1]*temp)+(biquadD[biq_aB1]*(1.0-temp));
biquadD[biq_a2] = (biquadD[biq_aA2]*temp)+(biquadD[biq_aB2]*(1.0-temp));
biquadD[biq_b1] = (biquadD[biq_bA1]*temp)+(biquadD[biq_bB1]*(1.0-temp));
biquadD[biq_b2] = (biquadD[biq_bA2]*temp)+(biquadD[biq_bB2]*(1.0-temp));
biquadE[biq_a0] = (biquadE[biq_aA0]*temp)+(biquadE[biq_aB0]*(1.0-temp));
biquadE[biq_a1] = (biquadE[biq_aA1]*temp)+(biquadE[biq_aB1]*(1.0-temp));
biquadE[biq_a2] = (biquadE[biq_aA2]*temp)+(biquadE[biq_aB2]*(1.0-temp));
biquadE[biq_b1] = (biquadE[biq_bA1]*temp)+(biquadE[biq_bB1]*(1.0-temp));
biquadE[biq_b2] = (biquadE[biq_bA2]*temp)+(biquadE[biq_bB2]*(1.0-temp));
biquadF[biq_a0] = (biquadF[biq_aA0]*temp)+(biquadF[biq_aB0]*(1.0-temp));
biquadF[biq_a1] = (biquadF[biq_aA1]*temp)+(biquadF[biq_aB1]*(1.0-temp));
biquadF[biq_a2] = (biquadF[biq_aA2]*temp)+(biquadF[biq_aB2]*(1.0-temp));
biquadF[biq_b1] = (biquadF[biq_bA1]*temp)+(biquadF[biq_bB1]*(1.0-temp));
biquadF[biq_b2] = (biquadF[biq_bA2]*temp)+(biquadF[biq_bB2]*(1.0-temp));
biquadG[biq_a0] = (biquadG[biq_aA0]*temp)+(biquadG[biq_aB0]*(1.0-temp));
biquadG[biq_a1] = (biquadG[biq_aA1]*temp)+(biquadG[biq_aB1]*(1.0-temp));
biquadG[biq_a2] = (biquadG[biq_aA2]*temp)+(biquadG[biq_aB2]*(1.0-temp));
biquadG[biq_b1] = (biquadG[biq_bA1]*temp)+(biquadG[biq_bB1]*(1.0-temp));
biquadG[biq_b2] = (biquadG[biq_bA2]*temp)+(biquadG[biq_bB2]*(1.0-temp));
//this is the interpolation code for the biquad
outSample = (inputSampleL * biquadA[biq_a0]) + biquadA[biq_sL1];
biquadA[biq_sL1] = (inputSampleL * biquadA[biq_a1]) - (outSample * biquadA[biq_b1]) + biquadA[biq_sL2];
biquadA[biq_sL2] = (inputSampleL * biquadA[biq_a2]) - (outSample * biquadA[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * biquadA[biq_a0]) + biquadA[biq_sR1];
biquadA[biq_sR1] = (inputSampleR * biquadA[biq_a1]) - (outSample * biquadA[biq_b1]) + biquadA[biq_sR2];
biquadA[biq_sR2] = (inputSampleR * biquadA[biq_a2]) - (outSample * biquadA[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * biquadB[biq_a0]) + biquadB[biq_sL1];
biquadB[biq_sL1] = (inputSampleL * biquadB[biq_a1]) - (outSample * biquadB[biq_b1]) + biquadB[biq_sL2];
biquadB[biq_sL2] = (inputSampleL * biquadB[biq_a2]) - (outSample * biquadB[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * biquadB[biq_a0]) + biquadB[biq_sR1];
biquadB[biq_sR1] = (inputSampleR * biquadB[biq_a1]) - (outSample * biquadB[biq_b1]) + biquadB[biq_sR2];
biquadB[biq_sR2] = (inputSampleR * biquadB[biq_a2]) - (outSample * biquadB[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * biquadC[biq_a0]) + biquadC[biq_sL1];
biquadC[biq_sL1] = (inputSampleL * biquadC[biq_a1]) - (outSample * biquadC[biq_b1]) + biquadC[biq_sL2];
biquadC[biq_sL2] = (inputSampleL * biquadC[biq_a2]) - (outSample * biquadC[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * biquadC[biq_a0]) + biquadC[biq_sR1];
biquadC[biq_sR1] = (inputSampleR * biquadC[biq_a1]) - (outSample * biquadC[biq_b1]) + biquadC[biq_sR2];
biquadC[biq_sR2] = (inputSampleR * biquadC[biq_a2]) - (outSample * biquadC[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * biquadD[biq_a0]) + biquadD[biq_sL1];
biquadD[biq_sL1] = (inputSampleL * biquadD[biq_a1]) - (outSample * biquadD[biq_b1]) + biquadD[biq_sL2];
biquadD[biq_sL2] = (inputSampleL * biquadD[biq_a2]) - (outSample * biquadD[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * biquadD[biq_a0]) + biquadD[biq_sR1];
biquadD[biq_sR1] = (inputSampleR * biquadD[biq_a1]) - (outSample * biquadD[biq_b1]) + biquadD[biq_sR2];
biquadD[biq_sR2] = (inputSampleR * biquadD[biq_a2]) - (outSample * biquadD[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * biquadE[biq_a0]) + biquadE[biq_sL1];
biquadE[biq_sL1] = (inputSampleL * biquadE[biq_a1]) - (outSample * biquadE[biq_b1]) + biquadE[biq_sL2];
biquadE[biq_sL2] = (inputSampleL * biquadE[biq_a2]) - (outSample * biquadE[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * biquadE[biq_a0]) + biquadE[biq_sR1];
biquadE[biq_sR1] = (inputSampleR * biquadE[biq_a1]) - (outSample * biquadE[biq_b1]) + biquadE[biq_sR2];
biquadE[biq_sR2] = (inputSampleR * biquadE[biq_a2]) - (outSample * biquadE[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * biquadF[biq_a0]) + biquadF[biq_sL1];
biquadF[biq_sL1] = (inputSampleL * biquadF[biq_a1]) - (outSample * biquadF[biq_b1]) + biquadF[biq_sL2];
biquadF[biq_sL2] = (inputSampleL * biquadF[biq_a2]) - (outSample * biquadF[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * biquadF[biq_a0]) + biquadF[biq_sR1];
biquadF[biq_sR1] = (inputSampleR * biquadF[biq_a1]) - (outSample * biquadF[biq_b1]) + biquadF[biq_sR2];
biquadF[biq_sR2] = (inputSampleR * biquadF[biq_a2]) - (outSample * biquadF[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * biquadG[biq_a0]) + biquadG[biq_sL1];
biquadG[biq_sL1] = (inputSampleL * biquadG[biq_a1]) - (outSample * biquadG[biq_b1]) + biquadG[biq_sL2];
biquadG[biq_sL2] = (inputSampleL * biquadG[biq_a2]) - (outSample * biquadG[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * biquadG[biq_a0]) + biquadG[biq_sR1];
biquadG[biq_sR1] = (inputSampleR * biquadG[biq_a1]) - (outSample * biquadG[biq_b1]) + biquadG[biq_sR2];
biquadG[biq_sR2] = (inputSampleR * biquadG[biq_a2]) - (outSample * biquadG[biq_b2]);
inputSampleR = outSample;
//begin ClipOnly2 stereo as a little, compressed chunk that can be dropped into code
if (inputSampleL > 4.0) inputSampleL = 4.0; if (inputSampleL < -4.0) inputSampleL = -4.0;
if (wasPosClipL == true) { //current will be over
if (inputSampleL<lastSampleL) lastSampleL=0.7058208+(inputSampleL*0.2609148);
else lastSampleL = 0.2491717+(lastSampleL*0.7390851);
} wasPosClipL = false;
if (inputSampleL>0.9549925859) {wasPosClipL=true;inputSampleL=0.7058208+(lastSampleL*0.2609148);}
if (wasNegClipL == true) { //current will be -over
if (inputSampleL > lastSampleL) lastSampleL=-0.7058208+(inputSampleL*0.2609148);
else lastSampleL=-0.2491717+(lastSampleL*0.7390851);
} wasNegClipL = false;
if (inputSampleL<-0.9549925859) {wasNegClipL=true;inputSampleL=-0.7058208+(lastSampleL*0.2609148);}
intermediateL[spacing] = inputSampleL;
inputSampleL = lastSampleL; //Latency is however many samples equals one 44.1k sample
for (int x = spacing; x > 0; x--) intermediateL[x-1] = intermediateL[x];
lastSampleL = intermediateL[0]; //run a little buffer to handle this
if (inputSampleR > 4.0) inputSampleR = 4.0; if (inputSampleR < -4.0) inputSampleR = -4.0;
if (wasPosClipR == true) { //current will be over
if (inputSampleR<lastSampleR) lastSampleR=0.7058208+(inputSampleR*0.2609148);
else lastSampleR = 0.2491717+(lastSampleR*0.7390851);
} wasPosClipR = false;
if (inputSampleR>0.9549925859) {wasPosClipR=true;inputSampleR=0.7058208+(lastSampleR*0.2609148);}
if (wasNegClipR == true) { //current will be -over
if (inputSampleR > lastSampleR) lastSampleR=-0.7058208+(inputSampleR*0.2609148);
else lastSampleR=-0.2491717+(lastSampleR*0.7390851);
} wasNegClipR = false;
if (inputSampleR<-0.9549925859) {wasNegClipR=true;inputSampleR=-0.7058208+(lastSampleR*0.2609148);}
intermediateR[spacing] = inputSampleR;
inputSampleR = lastSampleR; //Latency is however many samples equals one 44.1k sample
for (int x = spacing; x > 0; x--) intermediateR[x-1] = intermediateR[x];
lastSampleR = intermediateR[0]; //run a little buffer to handle this
//end ClipOnly2 stereo as a little, compressed chunk that can be dropped into code
//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 Isolator3::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
{
double* in1 = inputs[0];
double* in2 = inputs[1];
double* out1 = outputs[0];
double* out2 = outputs[1];
VstInt32 inFramesToProcess = sampleFrames; //vst doesn't give us this as a separate variable so we'll make it
double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= getSampleRate();
int spacing = floor(overallscale); //should give us working basic scaling, usually 2 or 4
if (spacing < 1) spacing = 1; if (spacing > 16) spacing = 16;
double f = A;
double q = B;
double isoFreq = ((f*2.0)*(1.0-q))+(f*q);
double hisoFreq = (((f*2.0)-1.0)*(1.0-q))+(f*q);
if (isoFreq > 1.0) isoFreq = 1.0;
if (hisoFreq < 0.0) hisoFreq = 0.0;
biquadA[biq_freq] = pow(isoFreq,(2.0*sqrt(overallscale)))*0.4999;
if (biquadA[biq_freq] < 0.00025) biquadA[biq_freq] = 0.00025;
biquadG[biq_freq] = biquadF[biq_freq] = biquadE[biq_freq] = biquadD[biq_freq] = biquadC[biq_freq] = biquadB[biq_freq] = biquadA[biq_freq];
hiquadA[biq_freq] = pow(hisoFreq,(2.0*sqrt(overallscale)))*0.4999;
if (hiquadA[biq_freq] < 0.00025) hiquadA[biq_freq] = 0.00025;
hiquadG[biq_freq] = hiquadF[biq_freq] = hiquadE[biq_freq] = hiquadD[biq_freq] = hiquadC[biq_freq] = hiquadB[biq_freq] = hiquadA[biq_freq];
hiquadA[biq_reso] = biquadA[biq_reso] = 4.46570214;
hiquadB[biq_reso] = biquadB[biq_reso] = 1.51387132;
hiquadC[biq_reso] = biquadC[biq_reso] = 0.93979296;
hiquadD[biq_reso] = biquadD[biq_reso] = 0.70710678;
hiquadE[biq_reso] = biquadE[biq_reso] = 0.59051105;
hiquadF[biq_reso] = biquadF[biq_reso] = 0.52972649;
hiquadG[biq_reso] = biquadG[biq_reso] = 0.50316379;
biquadA[biq_aA0] = biquadA[biq_aB0];
biquadA[biq_aA1] = biquadA[biq_aB1];
biquadA[biq_aA2] = biquadA[biq_aB2];
biquadA[biq_bA1] = biquadA[biq_bB1];
biquadA[biq_bA2] = biquadA[biq_bB2];
biquadB[biq_aA0] = biquadB[biq_aB0];
biquadB[biq_aA1] = biquadB[biq_aB1];
biquadB[biq_aA2] = biquadB[biq_aB2];
biquadB[biq_bA1] = biquadB[biq_bB1];
biquadB[biq_bA2] = biquadB[biq_bB2];
biquadC[biq_aA0] = biquadC[biq_aB0];
biquadC[biq_aA1] = biquadC[biq_aB1];
biquadC[biq_aA2] = biquadC[biq_aB2];
biquadC[biq_bA1] = biquadC[biq_bB1];
biquadC[biq_bA2] = biquadC[biq_bB2];
biquadD[biq_aA0] = biquadD[biq_aB0];
biquadD[biq_aA1] = biquadD[biq_aB1];
biquadD[biq_aA2] = biquadD[biq_aB2];
biquadD[biq_bA1] = biquadD[biq_bB1];
biquadD[biq_bA2] = biquadD[biq_bB2];
biquadE[biq_aA0] = biquadE[biq_aB0];
biquadE[biq_aA1] = biquadE[biq_aB1];
biquadE[biq_aA2] = biquadE[biq_aB2];
biquadE[biq_bA1] = biquadE[biq_bB1];
biquadE[biq_bA2] = biquadE[biq_bB2];
biquadF[biq_aA0] = biquadF[biq_aB0];
biquadF[biq_aA1] = biquadF[biq_aB1];
biquadF[biq_aA2] = biquadF[biq_aB2];
biquadF[biq_bA1] = biquadF[biq_bB1];
biquadF[biq_bA2] = biquadF[biq_bB2];
biquadG[biq_aA0] = biquadG[biq_aB0];
biquadG[biq_aA1] = biquadG[biq_aB1];
biquadG[biq_aA2] = biquadG[biq_aB2];
biquadG[biq_bA1] = biquadG[biq_bB1];
biquadG[biq_bA2] = biquadG[biq_bB2];
hiquadA[biq_aA0] = hiquadA[biq_aB0];
hiquadA[biq_aA1] = hiquadA[biq_aB1];
hiquadA[biq_aA2] = hiquadA[biq_aB2];
hiquadA[biq_bA1] = hiquadA[biq_bB1];
hiquadA[biq_bA2] = hiquadA[biq_bB2];
hiquadB[biq_aA0] = hiquadB[biq_aB0];
hiquadB[biq_aA1] = hiquadB[biq_aB1];
hiquadB[biq_aA2] = hiquadB[biq_aB2];
hiquadB[biq_bA1] = hiquadB[biq_bB1];
hiquadB[biq_bA2] = hiquadB[biq_bB2];
hiquadC[biq_aA0] = hiquadC[biq_aB0];
hiquadC[biq_aA1] = hiquadC[biq_aB1];
hiquadC[biq_aA2] = hiquadC[biq_aB2];
hiquadC[biq_bA1] = hiquadC[biq_bB1];
hiquadC[biq_bA2] = hiquadC[biq_bB2];
hiquadD[biq_aA0] = hiquadD[biq_aB0];
hiquadD[biq_aA1] = hiquadD[biq_aB1];
hiquadD[biq_aA2] = hiquadD[biq_aB2];
hiquadD[biq_bA1] = hiquadD[biq_bB1];
hiquadD[biq_bA2] = hiquadD[biq_bB2];
hiquadE[biq_aA0] = hiquadE[biq_aB0];
hiquadE[biq_aA1] = hiquadE[biq_aB1];
hiquadE[biq_aA2] = hiquadE[biq_aB2];
hiquadE[biq_bA1] = hiquadE[biq_bB1];
hiquadE[biq_bA2] = hiquadE[biq_bB2];
hiquadF[biq_aA0] = hiquadF[biq_aB0];
hiquadF[biq_aA1] = hiquadF[biq_aB1];
hiquadF[biq_aA2] = hiquadF[biq_aB2];
hiquadF[biq_bA1] = hiquadF[biq_bB1];
hiquadF[biq_bA2] = hiquadF[biq_bB2];
hiquadG[biq_aA0] = hiquadG[biq_aB0];
hiquadG[biq_aA1] = hiquadG[biq_aB1];
hiquadG[biq_aA2] = hiquadG[biq_aB2];
hiquadG[biq_bA1] = hiquadG[biq_bB1];
hiquadG[biq_bA2] = hiquadG[biq_bB2];
//previous run through the buffer is still in the filter, so we move it
//to the A section and now it's the new starting point.
double K = tan(M_PI * biquadA[biq_freq]);
double norm = 1.0 / (1.0 + K / biquadA[biq_reso] + K * K);
biquadA[biq_aB0] = K * K * norm;
biquadA[biq_aB1] = 2.0 * biquadA[biq_aB0];
biquadA[biq_aB2] = biquadA[biq_aB0];
biquadA[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadA[biq_bB2] = (1.0 - K / biquadA[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadB[biq_freq]);
norm = 1.0 / (1.0 + K / biquadB[biq_reso] + K * K);
biquadB[biq_aB0] = K * K * norm;
biquadB[biq_aB1] = 2.0 * biquadB[biq_aB0];
biquadB[biq_aB2] = biquadB[biq_aB0];
biquadB[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadB[biq_bB2] = (1.0 - K / biquadB[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadC[biq_freq]);
norm = 1.0 / (1.0 + K / biquadC[biq_reso] + K * K);
biquadC[biq_aB0] = K * K * norm;
biquadC[biq_aB1] = 2.0 * biquadC[biq_aB0];
biquadC[biq_aB2] = biquadC[biq_aB0];
biquadC[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadC[biq_bB2] = (1.0 - K / biquadC[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadD[biq_freq]);
norm = 1.0 / (1.0 + K / biquadD[biq_reso] + K * K);
biquadD[biq_aB0] = K * K * norm;
biquadD[biq_aB1] = 2.0 * biquadD[biq_aB0];
biquadD[biq_aB2] = biquadD[biq_aB0];
biquadD[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadD[biq_bB2] = (1.0 - K / biquadD[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadE[biq_freq]);
norm = 1.0 / (1.0 + K / biquadE[biq_reso] + K * K);
biquadE[biq_aB0] = K * K * norm;
biquadE[biq_aB1] = 2.0 * biquadE[biq_aB0];
biquadE[biq_aB2] = biquadE[biq_aB0];
biquadE[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadE[biq_bB2] = (1.0 - K / biquadE[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadF[biq_freq]);
norm = 1.0 / (1.0 + K / biquadF[biq_reso] + K * K);
biquadF[biq_aB0] = K * K * norm;
biquadF[biq_aB1] = 2.0 * biquadF[biq_aB0];
biquadF[biq_aB2] = biquadF[biq_aB0];
biquadF[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadF[biq_bB2] = (1.0 - K / biquadF[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadG[biq_freq]);
norm = 1.0 / (1.0 + K / biquadG[biq_reso] + K * K);
biquadG[biq_aB0] = K * K * norm;
biquadG[biq_aB1] = 2.0 * biquadG[biq_aB0];
biquadG[biq_aB2] = biquadG[biq_aB0];
biquadG[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadG[biq_bB2] = (1.0 - K / biquadG[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadA[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadA[biq_reso] + K * K);
hiquadA[biq_aB0] = K * K * norm;
hiquadA[biq_aB1] = 2.0 * hiquadA[biq_aB0];
hiquadA[biq_aB2] = hiquadA[biq_aB0];
hiquadA[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadA[biq_bB2] = (1.0 - K / hiquadA[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadB[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadB[biq_reso] + K * K);
hiquadB[biq_aB0] = K * K * norm;
hiquadB[biq_aB1] = 2.0 * hiquadB[biq_aB0];
hiquadB[biq_aB2] = hiquadB[biq_aB0];
hiquadB[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadB[biq_bB2] = (1.0 - K / hiquadB[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadC[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadC[biq_reso] + K * K);
hiquadC[biq_aB0] = K * K * norm;
hiquadC[biq_aB1] = 2.0 * hiquadC[biq_aB0];
hiquadC[biq_aB2] = hiquadC[biq_aB0];
hiquadC[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadC[biq_bB2] = (1.0 - K / hiquadC[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadD[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadD[biq_reso] + K * K);
hiquadD[biq_aB0] = K * K * norm;
hiquadD[biq_aB1] = 2.0 * hiquadD[biq_aB0];
hiquadD[biq_aB2] = hiquadD[biq_aB0];
hiquadD[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadD[biq_bB2] = (1.0 - K / hiquadD[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadE[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadE[biq_reso] + K * K);
hiquadE[biq_aB0] = K * K * norm;
hiquadE[biq_aB1] = 2.0 * hiquadE[biq_aB0];
hiquadE[biq_aB2] = hiquadE[biq_aB0];
hiquadE[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadE[biq_bB2] = (1.0 - K / hiquadE[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadF[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadF[biq_reso] + K * K);
hiquadF[biq_aB0] = K * K * norm;
hiquadF[biq_aB1] = 2.0 * hiquadF[biq_aB0];
hiquadF[biq_aB2] = hiquadF[biq_aB0];
hiquadF[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadF[biq_bB2] = (1.0 - K / hiquadF[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadG[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadG[biq_reso] + K * K);
hiquadG[biq_aB0] = K * K * norm;
hiquadG[biq_aB1] = 2.0 * hiquadG[biq_aB0];
hiquadG[biq_aB2] = hiquadG[biq_aB0];
hiquadG[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadG[biq_bB2] = (1.0 - K / hiquadG[biq_reso] + K * K) * norm;
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;
double drySampleL = inputSampleL;
double drySampleR = inputSampleR;
double temp = (double)sampleFrames/inFramesToProcess;
hiquadA[biq_a0] = (hiquadA[biq_aA0]*temp)+(hiquadA[biq_aB0]*(1.0-temp));
hiquadA[biq_a1] = (hiquadA[biq_aA1]*temp)+(hiquadA[biq_aB1]*(1.0-temp));
hiquadA[biq_a2] = (hiquadA[biq_aA2]*temp)+(hiquadA[biq_aB2]*(1.0-temp));
hiquadA[biq_b1] = (hiquadA[biq_bA1]*temp)+(hiquadA[biq_bB1]*(1.0-temp));
hiquadA[biq_b2] = (hiquadA[biq_bA2]*temp)+(hiquadA[biq_bB2]*(1.0-temp));
hiquadB[biq_a0] = (hiquadB[biq_aA0]*temp)+(hiquadB[biq_aB0]*(1.0-temp));
hiquadB[biq_a1] = (hiquadB[biq_aA1]*temp)+(hiquadB[biq_aB1]*(1.0-temp));
hiquadB[biq_a2] = (hiquadB[biq_aA2]*temp)+(hiquadB[biq_aB2]*(1.0-temp));
hiquadB[biq_b1] = (hiquadB[biq_bA1]*temp)+(hiquadB[biq_bB1]*(1.0-temp));
hiquadB[biq_b2] = (hiquadB[biq_bA2]*temp)+(hiquadB[biq_bB2]*(1.0-temp));
hiquadC[biq_a0] = (hiquadC[biq_aA0]*temp)+(hiquadC[biq_aB0]*(1.0-temp));
hiquadC[biq_a1] = (hiquadC[biq_aA1]*temp)+(hiquadC[biq_aB1]*(1.0-temp));
hiquadC[biq_a2] = (hiquadC[biq_aA2]*temp)+(hiquadC[biq_aB2]*(1.0-temp));
hiquadC[biq_b1] = (hiquadC[biq_bA1]*temp)+(hiquadC[biq_bB1]*(1.0-temp));
hiquadC[biq_b2] = (hiquadC[biq_bA2]*temp)+(hiquadC[biq_bB2]*(1.0-temp));
hiquadD[biq_a0] = (hiquadD[biq_aA0]*temp)+(hiquadD[biq_aB0]*(1.0-temp));
hiquadD[biq_a1] = (hiquadD[biq_aA1]*temp)+(hiquadD[biq_aB1]*(1.0-temp));
hiquadD[biq_a2] = (hiquadD[biq_aA2]*temp)+(hiquadD[biq_aB2]*(1.0-temp));
hiquadD[biq_b1] = (hiquadD[biq_bA1]*temp)+(hiquadD[biq_bB1]*(1.0-temp));
hiquadD[biq_b2] = (hiquadD[biq_bA2]*temp)+(hiquadD[biq_bB2]*(1.0-temp));
hiquadE[biq_a0] = (hiquadE[biq_aA0]*temp)+(hiquadE[biq_aB0]*(1.0-temp));
hiquadE[biq_a1] = (hiquadE[biq_aA1]*temp)+(hiquadE[biq_aB1]*(1.0-temp));
hiquadE[biq_a2] = (hiquadE[biq_aA2]*temp)+(hiquadE[biq_aB2]*(1.0-temp));
hiquadE[biq_b1] = (hiquadE[biq_bA1]*temp)+(hiquadE[biq_bB1]*(1.0-temp));
hiquadE[biq_b2] = (hiquadE[biq_bA2]*temp)+(hiquadE[biq_bB2]*(1.0-temp));
hiquadF[biq_a0] = (hiquadF[biq_aA0]*temp)+(hiquadF[biq_aB0]*(1.0-temp));
hiquadF[biq_a1] = (hiquadF[biq_aA1]*temp)+(hiquadF[biq_aB1]*(1.0-temp));
hiquadF[biq_a2] = (hiquadF[biq_aA2]*temp)+(hiquadF[biq_aB2]*(1.0-temp));
hiquadF[biq_b1] = (hiquadF[biq_bA1]*temp)+(hiquadF[biq_bB1]*(1.0-temp));
hiquadF[biq_b2] = (hiquadF[biq_bA2]*temp)+(hiquadF[biq_bB2]*(1.0-temp));
hiquadG[biq_a0] = (hiquadG[biq_aA0]*temp)+(hiquadG[biq_aB0]*(1.0-temp));
hiquadG[biq_a1] = (hiquadG[biq_aA1]*temp)+(hiquadG[biq_aB1]*(1.0-temp));
hiquadG[biq_a2] = (hiquadG[biq_aA2]*temp)+(hiquadG[biq_aB2]*(1.0-temp));
hiquadG[biq_b1] = (hiquadG[biq_bA1]*temp)+(hiquadG[biq_bB1]*(1.0-temp));
hiquadG[biq_b2] = (hiquadG[biq_bA2]*temp)+(hiquadG[biq_bB2]*(1.0-temp));
//this is the interpolation code for the hiquad
double outSample = (inputSampleL * hiquadA[biq_a0]) + hiquadA[biq_sL1];
hiquadA[biq_sL1] = (inputSampleL * hiquadA[biq_a1]) - (outSample * hiquadA[biq_b1]) + hiquadA[biq_sL2];
hiquadA[biq_sL2] = (inputSampleL * hiquadA[biq_a2]) - (outSample * hiquadA[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * hiquadA[biq_a0]) + hiquadA[biq_sR1];
hiquadA[biq_sR1] = (inputSampleR * hiquadA[biq_a1]) - (outSample * hiquadA[biq_b1]) + hiquadA[biq_sR2];
hiquadA[biq_sR2] = (inputSampleR * hiquadA[biq_a2]) - (outSample * hiquadA[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * hiquadB[biq_a0]) + hiquadB[biq_sL1];
hiquadB[biq_sL1] = (inputSampleL * hiquadB[biq_a1]) - (outSample * hiquadB[biq_b1]) + hiquadB[biq_sL2];
hiquadB[biq_sL2] = (inputSampleL * hiquadB[biq_a2]) - (outSample * hiquadB[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * hiquadB[biq_a0]) + hiquadB[biq_sR1];
hiquadB[biq_sR1] = (inputSampleR * hiquadB[biq_a1]) - (outSample * hiquadB[biq_b1]) + hiquadB[biq_sR2];
hiquadB[biq_sR2] = (inputSampleR * hiquadB[biq_a2]) - (outSample * hiquadB[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * hiquadC[biq_a0]) + hiquadC[biq_sL1];
hiquadC[biq_sL1] = (inputSampleL * hiquadC[biq_a1]) - (outSample * hiquadC[biq_b1]) + hiquadC[biq_sL2];
hiquadC[biq_sL2] = (inputSampleL * hiquadC[biq_a2]) - (outSample * hiquadC[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * hiquadC[biq_a0]) + hiquadC[biq_sR1];
hiquadC[biq_sR1] = (inputSampleR * hiquadC[biq_a1]) - (outSample * hiquadC[biq_b1]) + hiquadC[biq_sR2];
hiquadC[biq_sR2] = (inputSampleR * hiquadC[biq_a2]) - (outSample * hiquadC[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * hiquadD[biq_a0]) + hiquadD[biq_sL1];
hiquadD[biq_sL1] = (inputSampleL * hiquadD[biq_a1]) - (outSample * hiquadD[biq_b1]) + hiquadD[biq_sL2];
hiquadD[biq_sL2] = (inputSampleL * hiquadD[biq_a2]) - (outSample * hiquadD[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * hiquadD[biq_a0]) + hiquadD[biq_sR1];
hiquadD[biq_sR1] = (inputSampleR * hiquadD[biq_a1]) - (outSample * hiquadD[biq_b1]) + hiquadD[biq_sR2];
hiquadD[biq_sR2] = (inputSampleR * hiquadD[biq_a2]) - (outSample * hiquadD[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * hiquadE[biq_a0]) + hiquadE[biq_sL1];
hiquadE[biq_sL1] = (inputSampleL * hiquadE[biq_a1]) - (outSample * hiquadE[biq_b1]) + hiquadE[biq_sL2];
hiquadE[biq_sL2] = (inputSampleL * hiquadE[biq_a2]) - (outSample * hiquadE[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * hiquadE[biq_a0]) + hiquadE[biq_sR1];
hiquadE[biq_sR1] = (inputSampleR * hiquadE[biq_a1]) - (outSample * hiquadE[biq_b1]) + hiquadE[biq_sR2];
hiquadE[biq_sR2] = (inputSampleR * hiquadE[biq_a2]) - (outSample * hiquadE[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * hiquadF[biq_a0]) + hiquadF[biq_sL1];
hiquadF[biq_sL1] = (inputSampleL * hiquadF[biq_a1]) - (outSample * hiquadF[biq_b1]) + hiquadF[biq_sL2];
hiquadF[biq_sL2] = (inputSampleL * hiquadF[biq_a2]) - (outSample * hiquadF[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * hiquadF[biq_a0]) + hiquadF[biq_sR1];
hiquadF[biq_sR1] = (inputSampleR * hiquadF[biq_a1]) - (outSample * hiquadF[biq_b1]) + hiquadF[biq_sR2];
hiquadF[biq_sR2] = (inputSampleR * hiquadF[biq_a2]) - (outSample * hiquadF[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * hiquadG[biq_a0]) + hiquadG[biq_sL1];
hiquadG[biq_sL1] = (inputSampleL * hiquadG[biq_a1]) - (outSample * hiquadG[biq_b1]) + hiquadG[biq_sL2];
hiquadG[biq_sL2] = (inputSampleL * hiquadG[biq_a2]) - (outSample * hiquadG[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * hiquadG[biq_a0]) + hiquadG[biq_sR1];
hiquadG[biq_sR1] = (inputSampleR * hiquadG[biq_a1]) - (outSample * hiquadG[biq_b1]) + hiquadG[biq_sR2];
hiquadG[biq_sR2] = (inputSampleR * hiquadG[biq_a2]) - (outSample * hiquadG[biq_b2]);
inputSampleR = outSample;
inputSampleL = (drySampleL - inputSampleL);
inputSampleR = (drySampleR - inputSampleR);
biquadA[biq_a0] = (biquadA[biq_aA0]*temp)+(biquadA[biq_aB0]*(1.0-temp));
biquadA[biq_a1] = (biquadA[biq_aA1]*temp)+(biquadA[biq_aB1]*(1.0-temp));
biquadA[biq_a2] = (biquadA[biq_aA2]*temp)+(biquadA[biq_aB2]*(1.0-temp));
biquadA[biq_b1] = (biquadA[biq_bA1]*temp)+(biquadA[biq_bB1]*(1.0-temp));
biquadA[biq_b2] = (biquadA[biq_bA2]*temp)+(biquadA[biq_bB2]*(1.0-temp));
biquadB[biq_a0] = (biquadB[biq_aA0]*temp)+(biquadB[biq_aB0]*(1.0-temp));
biquadB[biq_a1] = (biquadB[biq_aA1]*temp)+(biquadB[biq_aB1]*(1.0-temp));
biquadB[biq_a2] = (biquadB[biq_aA2]*temp)+(biquadB[biq_aB2]*(1.0-temp));
biquadB[biq_b1] = (biquadB[biq_bA1]*temp)+(biquadB[biq_bB1]*(1.0-temp));
biquadB[biq_b2] = (biquadB[biq_bA2]*temp)+(biquadB[biq_bB2]*(1.0-temp));
biquadC[biq_a0] = (biquadC[biq_aA0]*temp)+(biquadC[biq_aB0]*(1.0-temp));
biquadC[biq_a1] = (biquadC[biq_aA1]*temp)+(biquadC[biq_aB1]*(1.0-temp));
biquadC[biq_a2] = (biquadC[biq_aA2]*temp)+(biquadC[biq_aB2]*(1.0-temp));
biquadC[biq_b1] = (biquadC[biq_bA1]*temp)+(biquadC[biq_bB1]*(1.0-temp));
biquadC[biq_b2] = (biquadC[biq_bA2]*temp)+(biquadC[biq_bB2]*(1.0-temp));
biquadD[biq_a0] = (biquadD[biq_aA0]*temp)+(biquadD[biq_aB0]*(1.0-temp));
biquadD[biq_a1] = (biquadD[biq_aA1]*temp)+(biquadD[biq_aB1]*(1.0-temp));
biquadD[biq_a2] = (biquadD[biq_aA2]*temp)+(biquadD[biq_aB2]*(1.0-temp));
biquadD[biq_b1] = (biquadD[biq_bA1]*temp)+(biquadD[biq_bB1]*(1.0-temp));
biquadD[biq_b2] = (biquadD[biq_bA2]*temp)+(biquadD[biq_bB2]*(1.0-temp));
biquadE[biq_a0] = (biquadE[biq_aA0]*temp)+(biquadE[biq_aB0]*(1.0-temp));
biquadE[biq_a1] = (biquadE[biq_aA1]*temp)+(biquadE[biq_aB1]*(1.0-temp));
biquadE[biq_a2] = (biquadE[biq_aA2]*temp)+(biquadE[biq_aB2]*(1.0-temp));
biquadE[biq_b1] = (biquadE[biq_bA1]*temp)+(biquadE[biq_bB1]*(1.0-temp));
biquadE[biq_b2] = (biquadE[biq_bA2]*temp)+(biquadE[biq_bB2]*(1.0-temp));
biquadF[biq_a0] = (biquadF[biq_aA0]*temp)+(biquadF[biq_aB0]*(1.0-temp));
biquadF[biq_a1] = (biquadF[biq_aA1]*temp)+(biquadF[biq_aB1]*(1.0-temp));
biquadF[biq_a2] = (biquadF[biq_aA2]*temp)+(biquadF[biq_aB2]*(1.0-temp));
biquadF[biq_b1] = (biquadF[biq_bA1]*temp)+(biquadF[biq_bB1]*(1.0-temp));
biquadF[biq_b2] = (biquadF[biq_bA2]*temp)+(biquadF[biq_bB2]*(1.0-temp));
biquadG[biq_a0] = (biquadG[biq_aA0]*temp)+(biquadG[biq_aB0]*(1.0-temp));
biquadG[biq_a1] = (biquadG[biq_aA1]*temp)+(biquadG[biq_aB1]*(1.0-temp));
biquadG[biq_a2] = (biquadG[biq_aA2]*temp)+(biquadG[biq_aB2]*(1.0-temp));
biquadG[biq_b1] = (biquadG[biq_bA1]*temp)+(biquadG[biq_bB1]*(1.0-temp));
biquadG[biq_b2] = (biquadG[biq_bA2]*temp)+(biquadG[biq_bB2]*(1.0-temp));
//this is the interpolation code for the biquad
outSample = (inputSampleL * biquadA[biq_a0]) + biquadA[biq_sL1];
biquadA[biq_sL1] = (inputSampleL * biquadA[biq_a1]) - (outSample * biquadA[biq_b1]) + biquadA[biq_sL2];
biquadA[biq_sL2] = (inputSampleL * biquadA[biq_a2]) - (outSample * biquadA[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * biquadA[biq_a0]) + biquadA[biq_sR1];
biquadA[biq_sR1] = (inputSampleR * biquadA[biq_a1]) - (outSample * biquadA[biq_b1]) + biquadA[biq_sR2];
biquadA[biq_sR2] = (inputSampleR * biquadA[biq_a2]) - (outSample * biquadA[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * biquadB[biq_a0]) + biquadB[biq_sL1];
biquadB[biq_sL1] = (inputSampleL * biquadB[biq_a1]) - (outSample * biquadB[biq_b1]) + biquadB[biq_sL2];
biquadB[biq_sL2] = (inputSampleL * biquadB[biq_a2]) - (outSample * biquadB[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * biquadB[biq_a0]) + biquadB[biq_sR1];
biquadB[biq_sR1] = (inputSampleR * biquadB[biq_a1]) - (outSample * biquadB[biq_b1]) + biquadB[biq_sR2];
biquadB[biq_sR2] = (inputSampleR * biquadB[biq_a2]) - (outSample * biquadB[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * biquadC[biq_a0]) + biquadC[biq_sL1];
biquadC[biq_sL1] = (inputSampleL * biquadC[biq_a1]) - (outSample * biquadC[biq_b1]) + biquadC[biq_sL2];
biquadC[biq_sL2] = (inputSampleL * biquadC[biq_a2]) - (outSample * biquadC[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * biquadC[biq_a0]) + biquadC[biq_sR1];
biquadC[biq_sR1] = (inputSampleR * biquadC[biq_a1]) - (outSample * biquadC[biq_b1]) + biquadC[biq_sR2];
biquadC[biq_sR2] = (inputSampleR * biquadC[biq_a2]) - (outSample * biquadC[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * biquadD[biq_a0]) + biquadD[biq_sL1];
biquadD[biq_sL1] = (inputSampleL * biquadD[biq_a1]) - (outSample * biquadD[biq_b1]) + biquadD[biq_sL2];
biquadD[biq_sL2] = (inputSampleL * biquadD[biq_a2]) - (outSample * biquadD[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * biquadD[biq_a0]) + biquadD[biq_sR1];
biquadD[biq_sR1] = (inputSampleR * biquadD[biq_a1]) - (outSample * biquadD[biq_b1]) + biquadD[biq_sR2];
biquadD[biq_sR2] = (inputSampleR * biquadD[biq_a2]) - (outSample * biquadD[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * biquadE[biq_a0]) + biquadE[biq_sL1];
biquadE[biq_sL1] = (inputSampleL * biquadE[biq_a1]) - (outSample * biquadE[biq_b1]) + biquadE[biq_sL2];
biquadE[biq_sL2] = (inputSampleL * biquadE[biq_a2]) - (outSample * biquadE[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * biquadE[biq_a0]) + biquadE[biq_sR1];
biquadE[biq_sR1] = (inputSampleR * biquadE[biq_a1]) - (outSample * biquadE[biq_b1]) + biquadE[biq_sR2];
biquadE[biq_sR2] = (inputSampleR * biquadE[biq_a2]) - (outSample * biquadE[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * biquadF[biq_a0]) + biquadF[biq_sL1];
biquadF[biq_sL1] = (inputSampleL * biquadF[biq_a1]) - (outSample * biquadF[biq_b1]) + biquadF[biq_sL2];
biquadF[biq_sL2] = (inputSampleL * biquadF[biq_a2]) - (outSample * biquadF[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * biquadF[biq_a0]) + biquadF[biq_sR1];
biquadF[biq_sR1] = (inputSampleR * biquadF[biq_a1]) - (outSample * biquadF[biq_b1]) + biquadF[biq_sR2];
biquadF[biq_sR2] = (inputSampleR * biquadF[biq_a2]) - (outSample * biquadF[biq_b2]);
inputSampleR = outSample;
outSample = (inputSampleL * biquadG[biq_a0]) + biquadG[biq_sL1];
biquadG[biq_sL1] = (inputSampleL * biquadG[biq_a1]) - (outSample * biquadG[biq_b1]) + biquadG[biq_sL2];
biquadG[biq_sL2] = (inputSampleL * biquadG[biq_a2]) - (outSample * biquadG[biq_b2]);
inputSampleL = outSample;
outSample = (inputSampleR * biquadG[biq_a0]) + biquadG[biq_sR1];
biquadG[biq_sR1] = (inputSampleR * biquadG[biq_a1]) - (outSample * biquadG[biq_b1]) + biquadG[biq_sR2];
biquadG[biq_sR2] = (inputSampleR * biquadG[biq_a2]) - (outSample * biquadG[biq_b2]);
inputSampleR = outSample;
//begin ClipOnly2 stereo as a little, compressed chunk that can be dropped into code
if (inputSampleL > 4.0) inputSampleL = 4.0; if (inputSampleL < -4.0) inputSampleL = -4.0;
if (wasPosClipL == true) { //current will be over
if (inputSampleL<lastSampleL) lastSampleL=0.7058208+(inputSampleL*0.2609148);
else lastSampleL = 0.2491717+(lastSampleL*0.7390851);
} wasPosClipL = false;
if (inputSampleL>0.9549925859) {wasPosClipL=true;inputSampleL=0.7058208+(lastSampleL*0.2609148);}
if (wasNegClipL == true) { //current will be -over
if (inputSampleL > lastSampleL) lastSampleL=-0.7058208+(inputSampleL*0.2609148);
else lastSampleL=-0.2491717+(lastSampleL*0.7390851);
} wasNegClipL = false;
if (inputSampleL<-0.9549925859) {wasNegClipL=true;inputSampleL=-0.7058208+(lastSampleL*0.2609148);}
intermediateL[spacing] = inputSampleL;
inputSampleL = lastSampleL; //Latency is however many samples equals one 44.1k sample
for (int x = spacing; x > 0; x--) intermediateL[x-1] = intermediateL[x];
lastSampleL = intermediateL[0]; //run a little buffer to handle this
if (inputSampleR > 4.0) inputSampleR = 4.0; if (inputSampleR < -4.0) inputSampleR = -4.0;
if (wasPosClipR == true) { //current will be over
if (inputSampleR<lastSampleR) lastSampleR=0.7058208+(inputSampleR*0.2609148);
else lastSampleR = 0.2491717+(lastSampleR*0.7390851);
} wasPosClipR = false;
if (inputSampleR>0.9549925859) {wasPosClipR=true;inputSampleR=0.7058208+(lastSampleR*0.2609148);}
if (wasNegClipR == true) { //current will be -over
if (inputSampleR > lastSampleR) lastSampleR=-0.7058208+(inputSampleR*0.2609148);
else lastSampleR=-0.2491717+(lastSampleR*0.7390851);
} wasNegClipR = false;
if (inputSampleR<-0.9549925859) {wasNegClipR=true;inputSampleR=-0.7058208+(lastSampleR*0.2609148);}
intermediateR[spacing] = inputSampleR;
inputSampleR = lastSampleR; //Latency is however many samples equals one 44.1k sample
for (int x = spacing; x > 0; x--) intermediateR[x-1] = intermediateR[x];
lastSampleR = intermediateR[0]; //run a little buffer to handle this
//end ClipOnly2 stereo as a little, compressed chunk that can be dropped into code
//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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