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https://github.com/airwindows/airwindows.git
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238 lines
8.5 KiB
C++
Executable file
238 lines
8.5 KiB
C++
Executable file
/* ========================================
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* Gringer - Gringer.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Gringer_H
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#include "Gringer.h"
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#endif
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void Gringer::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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inbandL[0] = 0.025/overallscale;
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outbandL[0] = 0.025/overallscale;
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inbandL[1] = 0.001;
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outbandL[1] = 0.001;
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inbandR[0] = 0.025/overallscale;
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outbandR[0] = 0.025/overallscale;
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inbandR[1] = 0.001;
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outbandR[1] = 0.001;
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//hardwired for wide bandpass around the rectification
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double K = tan(M_PI * inbandL[0]);
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double norm = 1.0 / (1.0 + K / inbandL[1] + K * K);
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inbandL[2] = K / inbandL[1] * norm;
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inbandL[4] = -inbandL[2];
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inbandL[5] = 2.0 * (K * K - 1.0) * norm;
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inbandL[6] = (1.0 - K / inbandL[1] + K * K) * norm;
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K = tan(M_PI * outbandL[0]);
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norm = 1.0 / (1.0 + K / outbandL[1] + K * K);
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outbandL[2] = K / outbandL[1] * norm;
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outbandL[4] = -outbandL[2];
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outbandL[5] = 2.0 * (K * K - 1.0) * norm;
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outbandL[6] = (1.0 - K / outbandL[1] + K * K) * norm;
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K = tan(M_PI * inbandR[0]);
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norm = 1.0 / (1.0 + K / inbandR[1] + K * K);
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inbandR[2] = K / inbandR[1] * norm;
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inbandR[4] = -inbandR[2];
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inbandR[5] = 2.0 * (K * K - 1.0) * norm;
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inbandR[6] = (1.0 - K / inbandR[1] + K * K) * norm;
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K = tan(M_PI * outbandR[0]);
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norm = 1.0 / (1.0 + K / outbandR[1] + K * K);
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outbandR[2] = K / outbandR[1] * norm;
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outbandR[4] = -outbandR[2];
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outbandR[5] = 2.0 * (K * K - 1.0) * norm;
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outbandR[6] = (1.0 - K / outbandR[1] + K * K) * norm;
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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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inputSampleL = sin(inputSampleL);
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inputSampleR = sin(inputSampleR);
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//encode Console5: good cleanness
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double tempSample = (inputSampleL * inbandL[2]) + inbandL[7];
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inbandL[7] = -(tempSample * inbandL[5]) + inbandL[8];
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inbandL[8] = (inputSampleL * inbandL[4]) - (tempSample * inbandL[6]);
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inputSampleL = fabs(tempSample);
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//this is all you gotta do to make the Green Ringer fullwave rectification effect
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//the rest is about making it work within a DAW context w. filtering and such
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tempSample = (inputSampleR * inbandR[2]) + inbandR[7];
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inbandR[7] = -(tempSample * inbandR[5]) + inbandR[8];
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inbandR[8] = (inputSampleR * inbandR[4]) - (tempSample * inbandR[6]);
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inputSampleR = fabs(tempSample);
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//this is all you gotta do to make the Green Ringer fullwave rectification effect
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//the rest is about making it work within a DAW context w. filtering and such
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tempSample = (inputSampleL * outbandL[2]) + outbandL[7];
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outbandL[7] = -(tempSample * outbandL[5]) + outbandL[8];
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outbandL[8] = (inputSampleL * outbandL[4]) - (tempSample * outbandL[6]);
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inputSampleL = tempSample;
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tempSample = (inputSampleR * outbandR[2]) + outbandR[7];
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outbandR[7] = -(tempSample * outbandR[5]) + outbandR[8];
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outbandR[8] = (inputSampleR * outbandR[4]) - (tempSample * outbandR[6]);
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inputSampleR = tempSample;
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if (inputSampleL > 1.0) inputSampleL = 1.0;
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if (inputSampleL < -1.0) inputSampleL = -1.0;
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//without this, you can get a NaN condition where it spits out DC offset at full blast!
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inputSampleL = asin(inputSampleL);
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//amplitude aspect
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if (inputSampleR > 1.0) inputSampleR = 1.0;
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if (inputSampleR < -1.0) inputSampleR = -1.0;
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//without this, you can get a NaN condition where it spits out DC offset at full blast!
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inputSampleR = asin(inputSampleR);
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//amplitude aspect
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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 Gringer::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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inbandL[0] = 0.025/overallscale;
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outbandL[0] = 0.025/overallscale;
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inbandL[1] = 0.001;
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outbandL[1] = 0.001;
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inbandR[0] = 0.025/overallscale;
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outbandR[0] = 0.025/overallscale;
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inbandR[1] = 0.001;
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outbandR[1] = 0.001;
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//hardwired for wide bandpass around the rectification
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double K = tan(M_PI * inbandL[0]);
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double norm = 1.0 / (1.0 + K / inbandL[1] + K * K);
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inbandL[2] = K / inbandL[1] * norm;
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inbandL[4] = -inbandL[2];
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inbandL[5] = 2.0 * (K * K - 1.0) * norm;
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inbandL[6] = (1.0 - K / inbandL[1] + K * K) * norm;
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K = tan(M_PI * outbandL[0]);
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norm = 1.0 / (1.0 + K / outbandL[1] + K * K);
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outbandL[2] = K / outbandL[1] * norm;
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outbandL[4] = -outbandL[2];
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outbandL[5] = 2.0 * (K * K - 1.0) * norm;
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outbandL[6] = (1.0 - K / outbandL[1] + K * K) * norm;
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K = tan(M_PI * inbandR[0]);
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norm = 1.0 / (1.0 + K / inbandR[1] + K * K);
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inbandR[2] = K / inbandR[1] * norm;
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inbandR[4] = -inbandR[2];
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inbandR[5] = 2.0 * (K * K - 1.0) * norm;
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inbandR[6] = (1.0 - K / inbandR[1] + K * K) * norm;
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K = tan(M_PI * outbandR[0]);
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norm = 1.0 / (1.0 + K / outbandR[1] + K * K);
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outbandR[2] = K / outbandR[1] * norm;
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outbandR[4] = -outbandR[2];
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outbandR[5] = 2.0 * (K * K - 1.0) * norm;
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outbandR[6] = (1.0 - K / outbandR[1] + K * K) * norm;
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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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inputSampleL = sin(inputSampleL);
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inputSampleR = sin(inputSampleR);
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//encode Console5: good cleanness
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double tempSample = (inputSampleL * inbandL[2]) + inbandL[7];
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inbandL[7] = -(tempSample * inbandL[5]) + inbandL[8];
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inbandL[8] = (inputSampleL * inbandL[4]) - (tempSample * inbandL[6]);
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inputSampleL = fabs(tempSample);
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//this is all you gotta do to make the Green Ringer fullwave rectification effect
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//the rest is about making it work within a DAW context w. filtering and such
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tempSample = (inputSampleR * inbandR[2]) + inbandR[7];
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inbandR[7] = -(tempSample * inbandR[5]) + inbandR[8];
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inbandR[8] = (inputSampleR * inbandR[4]) - (tempSample * inbandR[6]);
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inputSampleR = fabs(tempSample);
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//this is all you gotta do to make the Green Ringer fullwave rectification effect
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//the rest is about making it work within a DAW context w. filtering and such
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tempSample = (inputSampleL * outbandL[2]) + outbandL[7];
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outbandL[7] = -(tempSample * outbandL[5]) + outbandL[8];
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outbandL[8] = (inputSampleL * outbandL[4]) - (tempSample * outbandL[6]);
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inputSampleL = tempSample;
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tempSample = (inputSampleR * outbandR[2]) + outbandR[7];
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outbandR[7] = -(tempSample * outbandR[5]) + outbandR[8];
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outbandR[8] = (inputSampleR * outbandR[4]) - (tempSample * outbandR[6]);
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inputSampleR = tempSample;
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if (inputSampleL > 1.0) inputSampleL = 1.0;
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if (inputSampleL < -1.0) inputSampleL = -1.0;
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//without this, you can get a NaN condition where it spits out DC offset at full blast!
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inputSampleL = asin(inputSampleL);
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//amplitude aspect
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if (inputSampleR > 1.0) inputSampleR = 1.0;
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if (inputSampleR < -1.0) inputSampleR = -1.0;
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//without this, you can get a NaN condition where it spits out DC offset at full blast!
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inputSampleR = asin(inputSampleR);
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//amplitude aspect
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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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