mirror of
https://github.com/airwindows/airwindows.git
synced 2026-05-16 14:16:02 -06:00
270 lines
9.1 KiB
C++
Executable file
270 lines
9.1 KiB
C++
Executable file
/* ========================================
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* DeHiss - DeHiss.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __DeHiss_H
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#include "DeHiss.h"
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#endif
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void DeHiss::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 meanAL;
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double meanBL;
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double meanOutL = 0;
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double meanLastL;
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double averageL[5];
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double meanAR;
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double meanBR;
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double meanOutR = 0;
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double meanLastR;
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double averageR[5];
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double threshold = pow(A,9);
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double wet = B;
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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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//begin L
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storedL[1] = storedL[0];
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storedL[0] = inputSampleL;
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diffL[5] = diffL[4];
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diffL[4] = diffL[3];
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diffL[3] = diffL[2];
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diffL[2] = diffL[1];
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diffL[1] = diffL[0];
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diffL[0] = storedL[0] - storedL[1];
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averageL[4] = (diffL[0] + diffL[1] + diffL[2] + diffL[3] + diffL[4] + diffL[5])/6.0;
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averageL[3] = (diffL[0] + diffL[1] + diffL[2] + diffL[3] + diffL[4])/5.0;
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averageL[2] = (diffL[0] + diffL[1] + diffL[2] + diffL[3])/4.0;
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averageL[1] = (diffL[0] + diffL[1] + diffL[2])/3.0;
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averageL[0] = (diffL[0] + diffL[1])/2.0;
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meanAL = diffL[0];
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meanBL = diffL[0];
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if (fabs(averageL[4]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[4];}
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if (fabs(averageL[3]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[3];}
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if (fabs(averageL[2]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[2];}
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if (fabs(averageL[1]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[1];}
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if (fabs(averageL[0]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[0];}
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meanLastL = meanOutL;
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meanOutL = ((meanAL+meanBL)/2.0);
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if (rawL > 0) rawL -= 0.001;
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if (fabs(inputSampleL) > threshold) {gateL = 1.0; rawL = 2.0;}
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else {gateL = (gateL * 0.999); if (threshold > 0) gateL += ((fabs(inputSampleL)/threshold) * 0.001);}
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if ((fabs(meanOutL) > threshold) || (fabs(meanLastL) > threshold)){}
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else storedL[0] = storedL[1] + (meanOutL * gateL);
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if (rawL < 1) inputSampleL = (inputSampleL * rawL) + (storedL[0] * (1-rawL));
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//end L
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//begin R
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storedR[1] = storedR[0];
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storedR[0] = inputSampleR;
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diffR[5] = diffR[4];
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diffR[4] = diffR[3];
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diffR[3] = diffR[2];
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diffR[2] = diffR[1];
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diffR[1] = diffR[0];
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diffR[0] = storedR[0] - storedR[1];
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averageR[4] = (diffR[0] + diffR[1] + diffR[2] + diffR[3] + diffR[4] + diffR[5])/6.0;
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averageR[3] = (diffR[0] + diffR[1] + diffR[2] + diffR[3] + diffR[4])/5.0;
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averageR[2] = (diffR[0] + diffR[1] + diffR[2] + diffR[3])/4.0;
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averageR[1] = (diffR[0] + diffR[1] + diffR[2])/3.0;
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averageR[0] = (diffR[0] + diffR[1])/2.0;
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meanAR = diffR[0];
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meanBR = diffR[0];
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if (fabs(averageR[4]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[4];}
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if (fabs(averageR[3]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[3];}
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if (fabs(averageR[2]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[2];}
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if (fabs(averageR[1]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[1];}
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if (fabs(averageR[0]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[0];}
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meanLastR = meanOutR;
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meanOutR = ((meanAR+meanBR)/2.0);
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if (rawR > 0) rawR -= 0.001;
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if (fabs(inputSampleR) > threshold) {gateR = 1.0; rawR = 2.0;}
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else {gateR = (gateR * 0.999); if (threshold > 0) gateR += ((fabs(inputSampleR)/threshold) * 0.001);}
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if ((fabs(meanOutR) > threshold) || (fabs(meanLastR) > threshold)){}
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else storedR[0] = storedR[1] + (meanOutR * gateR);
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if (rawR < 1) inputSampleR = (inputSampleR * rawR) + (storedR[0] * (1-rawR));
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//end R
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if (wet !=1.0) {
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inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet));
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inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet));
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}
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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 DeHiss::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 meanAL;
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double meanBL;
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double meanOutL = 0;
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double meanLastL;
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double averageL[5];
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double meanAR;
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double meanBR;
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double meanOutR = 0;
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double meanLastR;
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double averageR[5];
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double threshold = pow(A,9);
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double wet = B;
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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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//begin L
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storedL[1] = storedL[0];
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storedL[0] = inputSampleL;
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diffL[5] = diffL[4];
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diffL[4] = diffL[3];
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diffL[3] = diffL[2];
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diffL[2] = diffL[1];
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diffL[1] = diffL[0];
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diffL[0] = storedL[0] - storedL[1];
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averageL[4] = (diffL[0] + diffL[1] + diffL[2] + diffL[3] + diffL[4] + diffL[5])/6.0;
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averageL[3] = (diffL[0] + diffL[1] + diffL[2] + diffL[3] + diffL[4])/5.0;
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averageL[2] = (diffL[0] + diffL[1] + diffL[2] + diffL[3])/4.0;
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averageL[1] = (diffL[0] + diffL[1] + diffL[2])/3.0;
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averageL[0] = (diffL[0] + diffL[1])/2.0;
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meanAL = diffL[0];
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meanBL = diffL[0];
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if (fabs(averageL[4]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[4];}
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if (fabs(averageL[3]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[3];}
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if (fabs(averageL[2]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[2];}
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if (fabs(averageL[1]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[1];}
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if (fabs(averageL[0]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[0];}
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meanLastL = meanOutL;
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meanOutL = ((meanAL+meanBL)/2.0);
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if (rawL > 0) rawL -= 0.001;
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if (fabs(inputSampleL) > threshold) {gateL = 1.0; rawL = 2.0;}
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else {gateL = (gateL * 0.999); if (threshold > 0) gateL += ((fabs(inputSampleL)/threshold) * 0.001);}
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if ((fabs(meanOutL) > threshold) || (fabs(meanLastL) > threshold)){}
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else storedL[0] = storedL[1] + (meanOutL * gateL);
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if (rawL < 1) inputSampleL = (inputSampleL * rawL) + (storedL[0] * (1-rawL));
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//end L
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//begin R
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storedR[1] = storedR[0];
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storedR[0] = inputSampleR;
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diffR[5] = diffR[4];
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diffR[4] = diffR[3];
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diffR[3] = diffR[2];
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diffR[2] = diffR[1];
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diffR[1] = diffR[0];
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diffR[0] = storedR[0] - storedR[1];
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averageR[4] = (diffR[0] + diffR[1] + diffR[2] + diffR[3] + diffR[4] + diffR[5])/6.0;
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averageR[3] = (diffR[0] + diffR[1] + diffR[2] + diffR[3] + diffR[4])/5.0;
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averageR[2] = (diffR[0] + diffR[1] + diffR[2] + diffR[3])/4.0;
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averageR[1] = (diffR[0] + diffR[1] + diffR[2])/3.0;
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averageR[0] = (diffR[0] + diffR[1])/2.0;
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meanAR = diffR[0];
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meanBR = diffR[0];
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if (fabs(averageR[4]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[4];}
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if (fabs(averageR[3]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[3];}
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if (fabs(averageR[2]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[2];}
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if (fabs(averageR[1]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[1];}
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if (fabs(averageR[0]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[0];}
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meanLastR = meanOutR;
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meanOutR = ((meanAR+meanBR)/2.0);
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if (rawR > 0) rawR -= 0.001;
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if (fabs(inputSampleR) > threshold) {gateR = 1.0; rawR = 2.0;}
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else {gateR = (gateR * 0.999); if (threshold > 0) gateR += ((fabs(inputSampleR)/threshold) * 0.001);}
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if ((fabs(meanOutR) > threshold) || (fabs(meanLastR) > threshold)){}
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else storedR[0] = storedR[1] + (meanOutR * gateR);
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if (rawR < 1) inputSampleR = (inputSampleR * rawR) + (storedR[0] * (1-rawR));
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//end R
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if (wet !=1.0) {
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inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet));
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inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet));
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}
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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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