mirror of
https://github.com/airwindows/airwindows.git
synced 2026-05-15 22:01:19 -06:00
238 lines
8.8 KiB
C++
Executable file
238 lines
8.8 KiB
C++
Executable file
/* ========================================
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* Air4 - Air4.h
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* Copyright (c) airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Air4_H
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#include "Air4.h"
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#endif
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void Air4::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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double overallscale = 1.0;
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overallscale /= 44100.0;
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overallscale *= getSampleRate();
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double airGain = A*2.0;
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if (airGain > 1.0) airGain = pow(airGain,3.0+sqrt(overallscale));
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double gndGain = B*2.0;
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double threshSinew = pow(C,2)/overallscale;
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double depthSinew = D;
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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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double drySampleL = inputSampleL;
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double drySampleR = inputSampleR;
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air[pvSL4] = air[pvAL4] - air[pvAL3];
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air[pvSL3] = air[pvAL3] - air[pvAL2];
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air[pvSL2] = air[pvAL2] - air[pvAL1];
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air[pvSL1] = air[pvAL1] - inputSampleL;
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air[accSL3] = air[pvSL4] - air[pvSL3];
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air[accSL2] = air[pvSL3] - air[pvSL2];
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air[accSL1] = air[pvSL2] - air[pvSL1];
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air[acc2SL2] = air[accSL3] - air[accSL2];
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air[acc2SL1] = air[accSL2] - air[accSL1];
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air[outAL] = -(air[pvAL1] + air[pvSL3] + air[acc2SL2] - ((air[acc2SL2] + air[acc2SL1])*0.5));
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air[gainAL] *= 0.5;
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air[gainAL] += fabs(drySampleL-air[outAL])*0.5;
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if (air[gainAL] > 0.3*sqrt(overallscale)) air[gainAL] = 0.3*sqrt(overallscale);
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air[pvAL4] = air[pvAL3];
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air[pvAL3] = air[pvAL2];
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air[pvAL2] = air[pvAL1];
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air[pvAL1] = (air[gainAL] * air[outAL]) + drySampleL;
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double gnd = drySampleL - ((air[outAL]*0.5)+(drySampleL*(0.457-(0.017*overallscale))));
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double temp = (gnd + air[gndavgL])*0.5; air[gndavgL] = gnd; gnd = temp;
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inputSampleL = ((drySampleL-gnd)*airGain)+(gnd*gndGain);
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air[pvSR4] = air[pvAR4] - air[pvAR3];
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air[pvSR3] = air[pvAR3] - air[pvAR2];
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air[pvSR2] = air[pvAR2] - air[pvAR1];
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air[pvSR1] = air[pvAR1] - inputSampleR;
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air[accSR3] = air[pvSR4] - air[pvSR3];
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air[accSR2] = air[pvSR3] - air[pvSR2];
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air[accSR1] = air[pvSR2] - air[pvSR1];
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air[acc2SR2] = air[accSR3] - air[accSR2];
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air[acc2SR1] = air[accSR2] - air[accSR1];
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air[outAR] = -(air[pvAR1] + air[pvSR3] + air[acc2SR2] - ((air[acc2SR2] + air[acc2SR1])*0.5));
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air[gainAR] *= 0.5;
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air[gainAR] += fabs(drySampleR-air[outAR])*0.5;
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if (air[gainAR] > 0.3*sqrt(overallscale)) air[gainAR] = 0.3*sqrt(overallscale);
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air[pvAR4] = air[pvAR3];
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air[pvAR3] = air[pvAR2];
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air[pvAR2] = air[pvAR1];
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air[pvAR1] = (air[gainAR] * air[outAR]) + drySampleR;
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gnd = drySampleR - ((air[outAR]*0.5)+(drySampleR*(0.457-(0.017*overallscale))));
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temp = (gnd + air[gndavgR])*0.5; air[gndavgR] = gnd; gnd = temp;
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inputSampleR = ((drySampleR-gnd)*airGain)+(gnd*gndGain);
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temp = inputSampleL; if (temp > 1.0) temp = 1.0; if (temp < -1.0) temp = -1.0;
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double sinew = threshSinew * cos(air[lastSL]*air[lastSL]);
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if (temp - air[lastSL] > sinew) temp = air[lastSL] + sinew;
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if (-(temp - air[lastSL]) > sinew) temp = air[lastSL] - sinew;
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air[lastSL] = temp;
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if (air[lastSL] > 1.0) air[lastSL] = 1.0;
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if (air[lastSL] < -1.0) air[lastSL] = -1.0;
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inputSampleL = (inputSampleL * (1.0-depthSinew))+(air[lastSL]*depthSinew);
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temp = inputSampleR; if (temp > 1.0) temp = 1.0; if (temp < -1.0) temp = -1.0;
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sinew = threshSinew * cos(air[lastSR]*air[lastSR]);
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if (temp - air[lastSR] > sinew) temp = air[lastSR] + sinew;
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if (-(temp - air[lastSR]) > sinew) temp = air[lastSR] - sinew;
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air[lastSR] = temp;
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if (air[lastSR] > 1.0) air[lastSR] = 1.0;
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if (air[lastSR] < -1.0) air[lastSR] = -1.0;
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inputSampleR = (inputSampleR * (1.0-depthSinew))+(air[lastSR]*depthSinew);
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//run Sinew to stop excess slews, but run a dry/wet to allow a range of brights
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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 Air4::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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double overallscale = 1.0;
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overallscale /= 44100.0;
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overallscale *= getSampleRate();
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double airGain = A*2.0;
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if (airGain > 1.0) airGain = pow(airGain,3.0+sqrt(overallscale));
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double gndGain = B*2.0;
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double threshSinew = pow(C,2)/overallscale;
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double depthSinew = D;
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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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double drySampleL = inputSampleL;
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double drySampleR = inputSampleR;
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air[pvSL4] = air[pvAL4] - air[pvAL3];
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air[pvSL3] = air[pvAL3] - air[pvAL2];
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air[pvSL2] = air[pvAL2] - air[pvAL1];
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air[pvSL1] = air[pvAL1] - inputSampleL;
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air[accSL3] = air[pvSL4] - air[pvSL3];
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air[accSL2] = air[pvSL3] - air[pvSL2];
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air[accSL1] = air[pvSL2] - air[pvSL1];
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air[acc2SL2] = air[accSL3] - air[accSL2];
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air[acc2SL1] = air[accSL2] - air[accSL1];
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air[outAL] = -(air[pvAL1] + air[pvSL3] + air[acc2SL2] - ((air[acc2SL2] + air[acc2SL1])*0.5));
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air[gainAL] *= 0.5;
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air[gainAL] += fabs(drySampleL-air[outAL])*0.5;
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if (air[gainAL] > 0.3*sqrt(overallscale)) air[gainAL] = 0.3*sqrt(overallscale);
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air[pvAL4] = air[pvAL3];
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air[pvAL3] = air[pvAL2];
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air[pvAL2] = air[pvAL1];
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air[pvAL1] = (air[gainAL] * air[outAL]) + drySampleL;
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double gnd = drySampleL - ((air[outAL]*0.5)+(drySampleL*(0.457-(0.017*overallscale))));
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double temp = (gnd + air[gndavgL])*0.5; air[gndavgL] = gnd; gnd = temp;
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inputSampleL = ((drySampleL-gnd)*airGain)+(gnd*gndGain);
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air[pvSR4] = air[pvAR4] - air[pvAR3];
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air[pvSR3] = air[pvAR3] - air[pvAR2];
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air[pvSR2] = air[pvAR2] - air[pvAR1];
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air[pvSR1] = air[pvAR1] - inputSampleR;
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air[accSR3] = air[pvSR4] - air[pvSR3];
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air[accSR2] = air[pvSR3] - air[pvSR2];
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air[accSR1] = air[pvSR2] - air[pvSR1];
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air[acc2SR2] = air[accSR3] - air[accSR2];
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air[acc2SR1] = air[accSR2] - air[accSR1];
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air[outAR] = -(air[pvAR1] + air[pvSR3] + air[acc2SR2] - ((air[acc2SR2] + air[acc2SR1])*0.5));
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air[gainAR] *= 0.5;
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air[gainAR] += fabs(drySampleR-air[outAR])*0.5;
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if (air[gainAR] > 0.3*sqrt(overallscale)) air[gainAR] = 0.3*sqrt(overallscale);
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air[pvAR4] = air[pvAR3];
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air[pvAR3] = air[pvAR2];
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air[pvAR2] = air[pvAR1];
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air[pvAR1] = (air[gainAR] * air[outAR]) + drySampleR;
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gnd = drySampleR - ((air[outAR]*0.5)+(drySampleR*(0.457-(0.017*overallscale))));
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temp = (gnd + air[gndavgR])*0.5; air[gndavgR] = gnd; gnd = temp;
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inputSampleR = ((drySampleR-gnd)*airGain)+(gnd*gndGain);
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temp = inputSampleL; if (temp > 1.0) temp = 1.0; if (temp < -1.0) temp = -1.0;
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double sinew = threshSinew * cos(air[lastSL]*air[lastSL]);
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if (temp - air[lastSL] > sinew) temp = air[lastSL] + sinew;
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if (-(temp - air[lastSL]) > sinew) temp = air[lastSL] - sinew;
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air[lastSL] = temp;
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if (air[lastSL] > 1.0) air[lastSL] = 1.0;
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if (air[lastSL] < -1.0) air[lastSL] = -1.0;
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inputSampleL = (inputSampleL * (1.0-depthSinew))+(air[lastSL]*depthSinew);
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temp = inputSampleR; if (temp > 1.0) temp = 1.0; if (temp < -1.0) temp = -1.0;
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sinew = threshSinew * cos(air[lastSR]*air[lastSR]);
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if (temp - air[lastSR] > sinew) temp = air[lastSR] + sinew;
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if (-(temp - air[lastSR]) > sinew) temp = air[lastSR] - sinew;
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air[lastSR] = temp;
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if (air[lastSR] > 1.0) air[lastSR] = 1.0;
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if (air[lastSR] < -1.0) air[lastSR] = -1.0;
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inputSampleR = (inputSampleR * (1.0-depthSinew))+(air[lastSR]*depthSinew);
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//run Sinew to stop excess slews, but run a dry/wet to allow a range of brights
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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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