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https://github.com/airwindows/airwindows.git
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194 lines
7.5 KiB
C++
Executable file
194 lines
7.5 KiB
C++
Executable file
/* ========================================
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* Donut - Donut.h
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* Copyright (c) airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Donut_H
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#include "Donut.h"
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#endif
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void Donut::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
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{
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float* in1 = inputs[0];
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float* in2 = inputs[1];
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float* out1 = outputs[0];
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float* out2 = outputs[1];
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VstInt32 inFramesToProcess = sampleFrames; //vst doesn't give us this as a separate variable so we'll make it
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double overallscale = 1.0;
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overallscale /= 44100.0;
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overallscale *= getSampleRate();
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double bezRez = pow(1.0-A, 6.0) / overallscale;
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double sloRez = pow(1.0-B, 6.0) / overallscale;
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bezRez = fmin(fmax(bezRez,0.00001),1.0);
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sloRez = fmin(fmax(sloRez,0.00001),1.0);
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freqA = freqB; resoA = resoB; outA = outB;
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freqB = pow(C,overallscale+1.0)*1.225;
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double movFreq = (D*2.0)-1.0;
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resoB = pow(1.0-E,2.0);
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if (resoB < 0.001) resoB = 0.001; // q of 0.0 is just a tone
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double movReso = (F*-2.0)+1.0;
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outB = G/sqrt(resoB);
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while (--sampleFrames >= 0)
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{
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double inputSampleL = *in1;
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double inputSampleR = *in2;
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if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
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if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
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const double temp = (double)sampleFrames/inFramesToProcess;
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const double freq = (freqA*temp)+(freqB*(1.0-temp));
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const double reso = (resoA*temp)+(resoB*(1.0-temp));
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const double out = (outA*temp)+(outB*(1.0-temp)); //dezippering
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double ctrl = fabs(inputSampleL);
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bezMinL = fmax(bezMinL-sloRez,ctrl);
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bezCompL[bez_cycle] += bezRez;
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bezCompL[bez_Ctrl] += (bezMinL * bezRez);
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if (bezCompL[bez_cycle] > 1.0) {
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bezCompL[bez_cycle] -= 1.0;
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bezCompL[bez_C] = bezCompL[bez_B];
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bezCompL[bez_B] = bezCompL[bez_A];
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bezCompL[bez_A] = bezCompL[bez_Ctrl];
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bezCompL[bez_Ctrl] = 0.0;
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}
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double CB = (bezCompL[bez_C]*(1.0-bezCompL[bez_cycle]))+(bezCompL[bez_B]*bezCompL[bez_cycle]);
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double BA = (bezCompL[bez_B]*(1.0-bezCompL[bez_cycle]))+(bezCompL[bez_A]*bezCompL[bez_cycle]);
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double CBA = (bezCompL[bez_B]+(CB*(1.0-bezCompL[bez_cycle]))+(BA*bezCompL[bez_cycle]))*0.5;
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double mFreq = fmin(fmax(freq+(CBA*movFreq),0.004/overallscale),1.225);
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double mReso = fmin(fmax(reso+(CBA*movReso),0.001),1.0);
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lowL += mFreq*bandL; bandL += mFreq*((mReso*inputSampleL)-lowL-(mReso*bandL));
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inputSampleL = (lowL-sin(bandL*0.5))*out; //airwin-donut
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ctrl = fabs(inputSampleR);
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bezMinR = fmax(bezMinR-sloRez,ctrl);
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bezCompR[bez_cycle] += bezRez;
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bezCompR[bez_Ctrl] += (bezMinR * bezRez);
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if (bezCompR[bez_cycle] > 1.0) {
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bezCompR[bez_cycle] -= 1.0;
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bezCompR[bez_C] = bezCompR[bez_B];
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bezCompR[bez_B] = bezCompR[bez_A];
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bezCompR[bez_A] = bezCompR[bez_Ctrl];
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bezCompR[bez_Ctrl] = 0.0;
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}
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CB = (bezCompR[bez_C]*(1.0-bezCompR[bez_cycle]))+(bezCompR[bez_B]*bezCompR[bez_cycle]);
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BA = (bezCompR[bez_B]*(1.0-bezCompR[bez_cycle]))+(bezCompR[bez_A]*bezCompR[bez_cycle]);
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CBA = (bezCompR[bez_B]+(CB*(1.0-bezCompR[bez_cycle]))+(BA*bezCompR[bez_cycle]))*0.5;
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mFreq = fmin(fmax(freq+(CBA*movFreq),0.004/overallscale),1.225);
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mReso = fmin(fmax(reso+(CBA*movReso),0.001),1.0);
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lowR += mFreq*bandR; bandR += mFreq*((mReso*inputSampleR)-lowR-(mReso*bandR));
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inputSampleR = (lowR-sin(bandR*0.5))*out; //airwin-donut
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//begin 32 bit stereo floating point dither
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int expon; frexpf((float)inputSampleL, &expon);
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fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
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inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
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frexpf((float)inputSampleR, &expon);
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fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
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inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
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//end 32 bit stereo floating point dither
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*out1 = inputSampleL;
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*out2 = inputSampleR;
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in1++;
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in2++;
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out1++;
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out2++;
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}
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}
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void Donut::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
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{
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double* in1 = inputs[0];
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double* in2 = inputs[1];
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double* out1 = outputs[0];
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double* out2 = outputs[1];
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VstInt32 inFramesToProcess = sampleFrames; //vst doesn't give us this as a separate variable so we'll make it
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double overallscale = 1.0;
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overallscale /= 44100.0;
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overallscale *= getSampleRate();
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double bezRez = pow(1.0-A, 6.0) / overallscale;
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double sloRez = pow(1.0-B, 6.0) / overallscale;
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bezRez = fmin(fmax(bezRez,0.00001),1.0);
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sloRez = fmin(fmax(sloRez,0.00001),1.0);
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freqA = freqB; resoA = resoB; outA = outB;
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freqB = pow(C,overallscale+1.0)*1.225;
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double movFreq = (D*2.0)-1.0;
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resoB = pow(1.0-E,2.0);
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if (resoB < 0.001) resoB = 0.001; // q of 0.0 is just a tone
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double movReso = (F*-2.0)+1.0;
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outB = G/sqrt(resoB);
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while (--sampleFrames >= 0)
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{
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double inputSampleL = *in1;
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double inputSampleR = *in2;
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if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
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if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
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const double temp = (double)sampleFrames/inFramesToProcess;
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const double freq = (freqA*temp)+(freqB*(1.0-temp));
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const double reso = (resoA*temp)+(resoB*(1.0-temp));
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const double out = (outA*temp)+(outB*(1.0-temp)); //dezippering
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double ctrl = fabs(inputSampleL);
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bezMinL = fmax(bezMinL-sloRez,ctrl);
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bezCompL[bez_cycle] += bezRez;
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bezCompL[bez_Ctrl] += (bezMinL * bezRez);
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if (bezCompL[bez_cycle] > 1.0) {
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bezCompL[bez_cycle] -= 1.0;
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bezCompL[bez_C] = bezCompL[bez_B];
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bezCompL[bez_B] = bezCompL[bez_A];
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bezCompL[bez_A] = bezCompL[bez_Ctrl];
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bezCompL[bez_Ctrl] = 0.0;
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}
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double CB = (bezCompL[bez_C]*(1.0-bezCompL[bez_cycle]))+(bezCompL[bez_B]*bezCompL[bez_cycle]);
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double BA = (bezCompL[bez_B]*(1.0-bezCompL[bez_cycle]))+(bezCompL[bez_A]*bezCompL[bez_cycle]);
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double CBA = (bezCompL[bez_B]+(CB*(1.0-bezCompL[bez_cycle]))+(BA*bezCompL[bez_cycle]))*0.5;
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double mFreq = fmin(fmax(freq+(CBA*movFreq),0.004/overallscale),1.225);
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double mReso = fmin(fmax(reso+(CBA*movReso),0.001),1.0);
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lowL += mFreq*bandL; bandL += mFreq*((mReso*inputSampleL)-lowL-(mReso*bandL));
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inputSampleL = (lowL-sin(bandL*0.5))*out; //airwin-donut
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ctrl = fabs(inputSampleR);
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bezMinR = fmax(bezMinR-sloRez,ctrl);
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bezCompR[bez_cycle] += bezRez;
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bezCompR[bez_Ctrl] += (bezMinR * bezRez);
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if (bezCompR[bez_cycle] > 1.0) {
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bezCompR[bez_cycle] -= 1.0;
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bezCompR[bez_C] = bezCompR[bez_B];
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bezCompR[bez_B] = bezCompR[bez_A];
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bezCompR[bez_A] = bezCompR[bez_Ctrl];
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bezCompR[bez_Ctrl] = 0.0;
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}
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CB = (bezCompR[bez_C]*(1.0-bezCompR[bez_cycle]))+(bezCompR[bez_B]*bezCompR[bez_cycle]);
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BA = (bezCompR[bez_B]*(1.0-bezCompR[bez_cycle]))+(bezCompR[bez_A]*bezCompR[bez_cycle]);
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CBA = (bezCompR[bez_B]+(CB*(1.0-bezCompR[bez_cycle]))+(BA*bezCompR[bez_cycle]))*0.5;
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mFreq = fmin(fmax(freq+(CBA*movFreq),0.004/overallscale),1.225);
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mReso = fmin(fmax(reso+(CBA*movReso),0.001),1.0);
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lowR += mFreq*bandR; bandR += mFreq*((mReso*inputSampleR)-lowR-(mReso*bandR));
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inputSampleR = (lowR-sin(bandR*0.5))*out; //airwin-donut
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//begin 64 bit stereo floating point dither
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//int expon; frexp((double)inputSampleL, &expon);
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fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
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//inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
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//frexp((double)inputSampleR, &expon);
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fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
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//inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
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//end 64 bit stereo floating point dither
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*out1 = inputSampleL;
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*out2 = inputSampleR;
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in1++;
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in2++;
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out1++;
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out2++;
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}
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}
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