/* ======================================== * ToTape9 - ToTape9.h * Copyright (c) airwindows, Airwindows uses the MIT license * ======================================== */ #ifndef __ToTape9_H #include "ToTape9.h" #endif void ToTape9::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) { float* in1 = inputs[0]; float* in2 = inputs[1]; float* out1 = outputs[0]; float* out2 = outputs[1]; 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; int slewsing = floor(overallscale*2.0); if (slewsing < 2) slewsing = 2; if (slewsing > 32) slewsing = 32; double inputGain = pow(A*2.0,2.0); double dublyAmount = B*2.0; double outlyAmount = (1.0-B)*-2.0; if (outlyAmount < -1.0) outlyAmount = -1.0; double iirEncFreq = (1.0-C)/overallscale; double iirDecFreq = C/overallscale; double flutDepth = pow(D,6)*overallscale*50; if (flutDepth > 498.0) flutDepth = 498.0; double flutFrequency = (0.02*pow(E,3))/overallscale; double bias = (F*2.0)-1.0; double underBias = (pow(bias,4)*0.25)/overallscale; double overBias = pow(1.0-bias,3)/overallscale; if (bias > 0.0) underBias = 0.0; if (bias < 0.0) overBias = 1.0/overallscale; gslew[threshold9] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold8] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold7] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold6] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold5] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold4] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold3] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold2] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold1] = overBias; overBias *= 1.618033988749894848204586; double headBumpDrive = (G*0.1)/overallscale; double headBumpMix = G*0.5; hdbA[hdb_freq] = (((H*H)*175.0)+25.0)/getSampleRate(); hdbB[hdb_freq] = hdbA[hdb_freq]*0.9375; hdbB[hdb_reso] = hdbA[hdb_reso] = 0.618033988749894848204586; hdbB[hdb_a1] = hdbA[hdb_a1] = 0.0; double K = tan(M_PI * hdbA[hdb_freq]); double norm = 1.0 / (1.0 + K / hdbA[hdb_reso] + K * K); hdbA[hdb_a0] = K / hdbA[hdb_reso] * norm; hdbA[hdb_a2] = -hdbA[hdb_a0]; hdbA[hdb_b1] = 2.0 * (K * K - 1.0) * norm; hdbA[hdb_b2] = (1.0 - K / hdbA[hdb_reso] + K * K) * norm; K = tan(M_PI * hdbB[hdb_freq]); norm = 1.0 / (1.0 + K / hdbB[hdb_reso] + K * K); hdbB[hdb_a0] = K / hdbB[hdb_reso] * norm; hdbB[hdb_a2] = -hdbB[hdb_a0]; hdbB[hdb_b1] = 2.0 * (K * K - 1.0) * norm; hdbB[hdb_b2] = (1.0 - K / hdbB[hdb_reso] + K * K) * norm; double outputGain = I*2.0; 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; if (inputGain != 1.0) { inputSampleL *= inputGain; inputSampleR *= inputGain; } //Dubly encode iirEncL = (iirEncL * (1.0 - iirEncFreq)) + (inputSampleL * iirEncFreq); double highPart = ((inputSampleL-iirEncL)*2.848); highPart += avgEncL; avgEncL = (inputSampleL-iirEncL)*1.152; if (highPart > 1.0) highPart = 1.0; if (highPart < -1.0) highPart = -1.0; double dubly = fabs(highPart); if (dubly > 0.0) { double adjust = log(1.0+(255.0*dubly))/2.40823996531; if (adjust > 0.0) dubly /= adjust; compEncL = (compEncL*(1.0-iirEncFreq))+(dubly*iirEncFreq); inputSampleL += ((highPart*compEncL)*dublyAmount); } //end Dubly encode L iirEncR = (iirEncR * (1.0 - iirEncFreq)) + (inputSampleR * iirEncFreq); highPart = ((inputSampleR-iirEncR)*2.848); highPart += avgEncR; avgEncR = (inputSampleR-iirEncR)*1.152; if (highPart > 1.0) highPart = 1.0; if (highPart < -1.0) highPart = -1.0; dubly = fabs(highPart); if (dubly > 0.0) { double adjust = log(1.0+(255.0*dubly))/2.40823996531; if (adjust > 0.0) dubly /= adjust; compEncR = (compEncR*(1.0-iirEncFreq))+(dubly*iirEncFreq); inputSampleR += ((highPart*compEncR)*dublyAmount); } //end Dubly encode R //begin Flutter if (flutDepth > 0.0) { if (gcount < 0 || gcount > 999) gcount = 999; dL[gcount] = inputSampleL; int count = gcount; double offset = flutDepth + (flutDepth * sin(sweepL)); sweepL += nextmaxL * flutFrequency; if (sweepL > (M_PI*2.0)) { sweepL -= M_PI*2.0; double flutA = 0.24 + (fpdL / (double)UINT32_MAX * 0.74); fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5; double flutB = 0.24 + (fpdL / (double)UINT32_MAX * 0.74); if (fabs(flutA-sin(sweepR+nextmaxR)) 999)?1000:0)] * (1-(offset-floor(offset)))); inputSampleL += (dL[count+1-((count+1 > 999)?1000:0)] * (offset-floor(offset))); dR[gcount] = inputSampleR; count = gcount; offset = flutDepth + (flutDepth * sin(sweepR)); sweepR += nextmaxR * flutFrequency; if (sweepR > (M_PI*2.0)) { sweepR -= M_PI*2.0; double flutA = 0.24 + (fpdR / (double)UINT32_MAX * 0.74); fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5; double flutB = 0.24 + (fpdR / (double)UINT32_MAX * 0.74); if (fabs(flutA-sin(sweepL+nextmaxL)) 999)?1000:0)] * (1-(offset-floor(offset)))); inputSampleR += (dR[count+1-((count+1 > 999)?1000:0)] * (offset-floor(offset))); gcount--; } //end Flutter //start bias routine if (fabs(bias) > 0.001) { for (int x = 0; x < gslew_total; x += 3) { if (underBias > 0.0) { double stuck = fabs(inputSampleL - (gslew[x]/0.975)) / underBias; if (stuck < 1.0) inputSampleL = (inputSampleL * stuck) + ((gslew[x]/0.975)*(1.0-stuck)); stuck = fabs(inputSampleR - (gslew[x+1]/0.975)) / underBias; if (stuck < 1.0) inputSampleR = (inputSampleR * stuck) + ((gslew[x+1]/0.975)*(1.0-stuck)); } if ((inputSampleL - gslew[x]) > gslew[x+2]) inputSampleL = gslew[x] + gslew[x+2]; if (-(inputSampleL - gslew[x]) > gslew[x+2]) inputSampleL = gslew[x] - gslew[x+2]; gslew[x] = inputSampleL * 0.975; if ((inputSampleR - gslew[x+1]) > gslew[x+2]) inputSampleR = gslew[x+1] + gslew[x+2]; if (-(inputSampleR - gslew[x+1]) > gslew[x+2]) inputSampleR = gslew[x+1] - gslew[x+2]; gslew[x+1] = inputSampleR * 0.975; } } //end bias routine //begin tiny hysteresis double applyHysteresis = (1.0-fabs(inputSampleL))*(1.0-fabs(inputSampleL))*0.012; hysteresisL = fmax(fmin(hysteresisL+((inputSampleL*fabs(inputSampleL))),0.011449),-0.011449)*0.999; inputSampleL += (hysteresisL*applyHysteresis); applyHysteresis = (1.0-fabs(inputSampleR))*(1.0-fabs(inputSampleR))*0.012; hysteresisR = fmax(fmin(hysteresisR+((inputSampleR*fabs(inputSampleR))),0.011449),-0.011449)*0.999; inputSampleR += (hysteresisR*applyHysteresis); //begin TapeHack2 double darkSampleL = inputSampleL; double darkSampleR = inputSampleR; if (avgPos > 31) avgPos = 0; if (slewsing > 31) { avg32L[avgPos] = darkSampleL; avg32R[avgPos] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 32; x++) {darkSampleL += avg32L[x]; darkSampleR += avg32R[x];} darkSampleL /= 32.0; darkSampleR /= 32.0; } if (slewsing > 15) { avg16L[avgPos%16] = darkSampleL; avg16R[avgPos%16] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 16; x++) {darkSampleL += avg16L[x]; darkSampleR += avg16R[x];} darkSampleL /= 16.0; darkSampleR /= 16.0; } if (slewsing > 7) { avg8L[avgPos%8] = darkSampleL; avg8R[avgPos%8] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 8; x++) {darkSampleL += avg8L[x]; darkSampleR += avg8R[x];} darkSampleL /= 8.0; darkSampleR /= 8.0; } if (slewsing > 3) { avg4L[avgPos%4] = darkSampleL; avg4R[avgPos%4] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 4; x++) {darkSampleL += avg4L[x]; darkSampleR += avg4R[x];} darkSampleL /= 4.0; darkSampleR /= 4.0; } if (slewsing > 1) { avg2L[avgPos%2] = darkSampleL; avg2R[avgPos%2] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 2; x++) {darkSampleL += avg2L[x]; darkSampleR += avg2R[x];} darkSampleL /= 2.0; darkSampleR /= 2.0; } //only update avgPos after the post-distortion filter stage double avgSlewL = fmin(fabs(lastDarkL-inputSampleL)*0.12*overallscale,1.0); avgSlewL = 1.0-(1.0-avgSlewL*1.0-avgSlewL); inputSampleL = (inputSampleL*(1.0-avgSlewL)) + (darkSampleL*avgSlewL); lastDarkL = darkSampleL; double avgSlewR = fmin(fabs(lastDarkR-inputSampleR)*0.12*overallscale,1.0); avgSlewR = 1.0-(1.0-avgSlewR*1.0-avgSlewR); inputSampleR = (inputSampleR*(1.0-avgSlewR)) + (darkSampleR*avgSlewR); lastDarkR = darkSampleR; //begin TapeHack inputSampleL = fmax(fmin(inputSampleL,2.305929007734908),-2.305929007734908); double addtwo = inputSampleL * inputSampleL; double empower = inputSampleL * addtwo; // inputSample to the third power inputSampleL -= (empower / 6.0); empower *= addtwo; // to the fifth power inputSampleL += (empower / 69.0); empower *= addtwo; //seventh inputSampleL -= (empower / 2530.08); empower *= addtwo; //ninth inputSampleL += (empower / 224985.6); empower *= addtwo; //eleventh inputSampleL -= (empower / 9979200.0f); //this is a degenerate form of a Taylor Series to approximate sin() inputSampleR = fmax(fmin(inputSampleR,2.305929007734908),-2.305929007734908); addtwo = inputSampleR * inputSampleR; empower = inputSampleR * addtwo; // inputSample to the third power inputSampleR -= (empower / 6.0); empower *= addtwo; // to the fifth power inputSampleR += (empower / 69.0); empower *= addtwo; //seventh inputSampleR -= (empower / 2530.08); empower *= addtwo; //ninth inputSampleR += (empower / 224985.6); empower *= addtwo; //eleventh inputSampleR -= (empower / 9979200.0f); //this is a degenerate form of a Taylor Series to approximate sin() darkSampleL = inputSampleL; darkSampleR = inputSampleR; if (avgPos > 31) avgPos = 0; if (slewsing > 31) { post32L[avgPos] = darkSampleL; post32R[avgPos] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 32; x++) {darkSampleL += post32L[x]; darkSampleR += post32R[x];} darkSampleL /= 32.0; darkSampleR /= 32.0; } if (slewsing > 15) { post16L[avgPos%16] = darkSampleL; post16R[avgPos%16] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 16; x++) {darkSampleL += post16L[x]; darkSampleR += post16R[x];} darkSampleL /= 16.0; darkSampleR /= 16.0; } if (slewsing > 7) { post8L[avgPos%8] = darkSampleL; post8R[avgPos%8] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 8; x++) {darkSampleL += post8L[x]; darkSampleR += post8R[x];} darkSampleL /= 8.0; darkSampleR /= 8.0; } if (slewsing > 3) { post4L[avgPos%4] = darkSampleL; post4R[avgPos%4] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 4; x++) {darkSampleL += post4L[x]; darkSampleR += post4R[x];} darkSampleL /= 4.0; darkSampleR /= 4.0; } if (slewsing > 1) { post2L[avgPos%2] = darkSampleL; post2R[avgPos%2] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 2; x++) {darkSampleL += post2L[x]; darkSampleR += post2R[x];} darkSampleL /= 2.0; darkSampleR /= 2.0; } avgPos++; inputSampleL = (inputSampleL*(1.0-avgSlewL)) + (darkSampleL*avgSlewL); inputSampleR = (inputSampleR*(1.0-avgSlewR)) + (darkSampleR*avgSlewR); //use the previously calculated depth of the filter //begin HeadBump double headBumpSampleL = 0.0; double headBumpSampleR = 0.0; if (headBumpMix > 0.0) { headBumpL += (inputSampleL * headBumpDrive); headBumpL -= (headBumpL * headBumpL * headBumpL * (0.0618/sqrt(overallscale))); headBumpR += (inputSampleR * headBumpDrive); headBumpR -= (headBumpR * headBumpR * headBumpR * (0.0618/sqrt(overallscale))); double headBiqSampleL = (headBumpL * hdbA[hdb_a0]) + hdbA[hdb_sL1]; hdbA[hdb_sL1] = (headBumpL * hdbA[hdb_a1]) - (headBiqSampleL * hdbA[hdb_b1]) + hdbA[hdb_sL2]; hdbA[hdb_sL2] = (headBumpL * hdbA[hdb_a2]) - (headBiqSampleL * hdbA[hdb_b2]); headBumpSampleL = (headBiqSampleL * hdbB[hdb_a0]) + hdbB[hdb_sL1]; hdbB[hdb_sL1] = (headBiqSampleL * hdbB[hdb_a1]) - (headBumpSampleL * hdbB[hdb_b1]) + hdbB[hdb_sL2]; hdbB[hdb_sL2] = (headBiqSampleL * hdbB[hdb_a2]) - (headBumpSampleL * hdbB[hdb_b2]); double headBiqSampleR = (headBumpR * hdbA[hdb_a0]) + hdbA[hdb_sR1]; hdbA[hdb_sR1] = (headBumpR * hdbA[hdb_a1]) - (headBiqSampleR * hdbA[hdb_b1]) + hdbA[hdb_sR2]; hdbA[hdb_sR2] = (headBumpR * hdbA[hdb_a2]) - (headBiqSampleR * hdbA[hdb_b2]); headBumpSampleR = (headBiqSampleR * hdbB[hdb_a0]) + hdbB[hdb_sR1]; hdbB[hdb_sR1] = (headBiqSampleR * hdbB[hdb_a1]) - (headBumpSampleR * hdbB[hdb_b1]) + hdbB[hdb_sR2]; hdbB[hdb_sR2] = (headBiqSampleR * hdbB[hdb_a2]) - (headBumpSampleR * hdbB[hdb_b2]); } //end HeadBump inputSampleL += (headBumpSampleL * headBumpMix); inputSampleR += (headBumpSampleR * headBumpMix); //Dubly decode iirDecL = (iirDecL * (1.0 - iirDecFreq)) + (inputSampleL * iirDecFreq); highPart = ((inputSampleL-iirDecL)*2.628); highPart += avgDecL; avgDecL = (inputSampleL-iirDecL)*1.372; if (highPart > 1.0) highPart = 1.0; if (highPart < -1.0) highPart = -1.0; dubly = fabs(highPart); if (dubly > 0.0) { double adjust = log(1.0+(255.0*dubly))/2.40823996531; if (adjust > 0.0) dubly /= adjust; compDecL = (compDecL*(1.0-iirDecFreq))+(dubly*iirDecFreq); inputSampleL += ((highPart*compDecL)*outlyAmount); } //end Dubly decode L iirDecR = (iirDecR * (1.0 - iirDecFreq)) + (inputSampleR * iirDecFreq); highPart = ((inputSampleR-iirDecR)*2.628); highPart += avgDecR; avgDecR = (inputSampleR-iirDecR)*1.372; if (highPart > 1.0) highPart = 1.0; if (highPart < -1.0) highPart = -1.0; dubly = fabs(highPart); if (dubly > 0.0) { double adjust = log(1.0+(255.0*dubly))/2.40823996531; if (adjust > 0.0) dubly /= adjust; compDecR = (compDecR*(1.0-iirDecFreq))+(dubly*iirDecFreq); inputSampleR += ((highPart*compDecR)*outlyAmount); } //end Dubly decode R if (outputGain != 1.0) { inputSampleL *= outputGain; inputSampleR *= outputGain; } //begin ClipOnly3 as a little, compressed chunk that can be dropped into code double noise = 1.0-((double(fpdL)/UINT32_MAX)*0.076); if (wasPosClipL == true) { //current will be over if (inputSampleL0.9085097) {wasPosClipL=true;inputSampleL=(0.9085097*noise)+(lastSampleL*(1.0-noise));} if (wasNegClipL == true) { //current will be -over if (inputSampleL > lastSampleL) lastSampleL=(-0.9085097*noise)+(inputSampleL*(1.0-noise)); else lastSampleL = -0.94; } wasNegClipL = false; if (inputSampleL<-0.9085097) {wasNegClipL=true;inputSampleL=(-0.9085097*noise)+(lastSampleL*(1.0-noise));} slewL[spacing*2] = fabs(lastSampleL-inputSampleL); for (int x = spacing*2; x > 0; x--) slewL[x-1] = slewL[x]; 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]; if (wasPosClipL || wasNegClipL) { for (int x = spacing; x > 0; x--) lastSampleL += intermediateL[x]; lastSampleL /= spacing; } double finalSlew = 0.0; for (int x = spacing*2; x >= 0; x--) if (finalSlew < slewL[x]) finalSlew = slewL[x]; double postclip = 0.94 / (1.0+(finalSlew*1.3986013)); if (inputSampleL > postclip) inputSampleL = postclip; if (inputSampleL < -postclip) inputSampleL = -postclip; noise = 1.0-((double(fpdR)/UINT32_MAX)*0.076); if (wasPosClipR == true) { //current will be over if (inputSampleR0.9085097) {wasPosClipR=true;inputSampleR=(0.9085097*noise)+(lastSampleR*(1.0-noise));} if (wasNegClipR == true) { //current will be -over if (inputSampleR > lastSampleR) lastSampleR=(-0.9085097*noise)+(inputSampleR*(1.0-noise)); else lastSampleR = -0.94; } wasNegClipR = false; if (inputSampleR<-0.9085097) {wasNegClipR=true;inputSampleR=(-0.9085097*noise)+(lastSampleR*(1.0-noise));} slewR[spacing*2] = fabs(lastSampleR-inputSampleR); for (int x = spacing*2; x > 0; x--) slewR[x-1] = slewR[x]; 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]; if (wasPosClipR || wasNegClipR) { for (int x = spacing; x > 0; x--) lastSampleR += intermediateR[x]; lastSampleR /= spacing; } finalSlew = 0.0; for (int x = spacing*2; x >= 0; x--) if (finalSlew < slewR[x]) finalSlew = slewR[x]; postclip = 0.94 / (1.0+(finalSlew*1.3986013)); if (inputSampleR > postclip) inputSampleR = postclip; if (inputSampleR < -postclip) inputSampleR = -postclip; //end ClipOnly3 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 ToTape9::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) { double* in1 = inputs[0]; double* in2 = inputs[1]; double* out1 = outputs[0]; double* out2 = outputs[1]; 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; int slewsing = floor(overallscale*2.0); if (slewsing < 2) slewsing = 2; if (slewsing > 32) slewsing = 32; double inputGain = pow(A*2.0,2.0); double dublyAmount = B*2.0; double outlyAmount = (1.0-B)*-2.0; if (outlyAmount < -1.0) outlyAmount = -1.0; double iirEncFreq = (1.0-C)/overallscale; double iirDecFreq = C/overallscale; double flutDepth = pow(D,6)*overallscale*50; if (flutDepth > 498.0) flutDepth = 498.0; double flutFrequency = (0.02*pow(E,3))/overallscale; double bias = (F*2.0)-1.0; double underBias = (pow(bias,4)*0.25)/overallscale; double overBias = pow(1.0-bias,3)/overallscale; if (bias > 0.0) underBias = 0.0; if (bias < 0.0) overBias = 1.0/overallscale; gslew[threshold9] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold8] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold7] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold6] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold5] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold4] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold3] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold2] = overBias; overBias *= 1.618033988749894848204586; gslew[threshold1] = overBias; overBias *= 1.618033988749894848204586; double headBumpDrive = (G*0.1)/overallscale; double headBumpMix = G*0.5; hdbA[hdb_freq] = (((H*H)*175.0)+25.0)/getSampleRate(); hdbB[hdb_freq] = hdbA[hdb_freq]*0.9375; hdbB[hdb_reso] = hdbA[hdb_reso] = 0.618033988749894848204586; hdbB[hdb_a1] = hdbA[hdb_a1] = 0.0; double K = tan(M_PI * hdbA[hdb_freq]); double norm = 1.0 / (1.0 + K / hdbA[hdb_reso] + K * K); hdbA[hdb_a0] = K / hdbA[hdb_reso] * norm; hdbA[hdb_a2] = -hdbA[hdb_a0]; hdbA[hdb_b1] = 2.0 * (K * K - 1.0) * norm; hdbA[hdb_b2] = (1.0 - K / hdbA[hdb_reso] + K * K) * norm; K = tan(M_PI * hdbB[hdb_freq]); norm = 1.0 / (1.0 + K / hdbB[hdb_reso] + K * K); hdbB[hdb_a0] = K / hdbB[hdb_reso] * norm; hdbB[hdb_a2] = -hdbB[hdb_a0]; hdbB[hdb_b1] = 2.0 * (K * K - 1.0) * norm; hdbB[hdb_b2] = (1.0 - K / hdbB[hdb_reso] + K * K) * norm; double outputGain = I*2.0; 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; if (inputGain != 1.0) { inputSampleL *= inputGain; inputSampleR *= inputGain; } //Dubly encode iirEncL = (iirEncL * (1.0 - iirEncFreq)) + (inputSampleL * iirEncFreq); double highPart = ((inputSampleL-iirEncL)*2.848); highPart += avgEncL; avgEncL = (inputSampleL-iirEncL)*1.152; if (highPart > 1.0) highPart = 1.0; if (highPart < -1.0) highPart = -1.0; double dubly = fabs(highPart); if (dubly > 0.0) { double adjust = log(1.0+(255.0*dubly))/2.40823996531; if (adjust > 0.0) dubly /= adjust; compEncL = (compEncL*(1.0-iirEncFreq))+(dubly*iirEncFreq); inputSampleL += ((highPart*compEncL)*dublyAmount); } //end Dubly encode L iirEncR = (iirEncR * (1.0 - iirEncFreq)) + (inputSampleR * iirEncFreq); highPart = ((inputSampleR-iirEncR)*2.848); highPart += avgEncR; avgEncR = (inputSampleR-iirEncR)*1.152; if (highPart > 1.0) highPart = 1.0; if (highPart < -1.0) highPart = -1.0; dubly = fabs(highPart); if (dubly > 0.0) { double adjust = log(1.0+(255.0*dubly))/2.40823996531; if (adjust > 0.0) dubly /= adjust; compEncR = (compEncR*(1.0-iirEncFreq))+(dubly*iirEncFreq); inputSampleR += ((highPart*compEncR)*dublyAmount); } //end Dubly encode R //begin Flutter if (flutDepth > 0.0) { if (gcount < 0 || gcount > 999) gcount = 999; dL[gcount] = inputSampleL; int count = gcount; double offset = flutDepth + (flutDepth * sin(sweepL)); sweepL += nextmaxL * flutFrequency; if (sweepL > (M_PI*2.0)) { sweepL -= M_PI*2.0; double flutA = 0.24 + (fpdL / (double)UINT32_MAX * 0.74); fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5; double flutB = 0.24 + (fpdL / (double)UINT32_MAX * 0.74); if (fabs(flutA-sin(sweepR+nextmaxR)) 999)?1000:0)] * (1-(offset-floor(offset)))); inputSampleL += (dL[count+1-((count+1 > 999)?1000:0)] * (offset-floor(offset))); dR[gcount] = inputSampleR; count = gcount; offset = flutDepth + (flutDepth * sin(sweepR)); sweepR += nextmaxR * flutFrequency; if (sweepR > (M_PI*2.0)) { sweepR -= M_PI*2.0; double flutA = 0.24 + (fpdR / (double)UINT32_MAX * 0.74); fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5; double flutB = 0.24 + (fpdR / (double)UINT32_MAX * 0.74); if (fabs(flutA-sin(sweepL+nextmaxL)) 999)?1000:0)] * (1-(offset-floor(offset)))); inputSampleR += (dR[count+1-((count+1 > 999)?1000:0)] * (offset-floor(offset))); gcount--; } //end Flutter //start bias routine if (fabs(bias) > 0.001) { for (int x = 0; x < gslew_total; x += 3) { if (underBias > 0.0) { double stuck = fabs(inputSampleL - (gslew[x]/0.975)) / underBias; if (stuck < 1.0) inputSampleL = (inputSampleL * stuck) + ((gslew[x]/0.975)*(1.0-stuck)); stuck = fabs(inputSampleR - (gslew[x+1]/0.975)) / underBias; if (stuck < 1.0) inputSampleR = (inputSampleR * stuck) + ((gslew[x+1]/0.975)*(1.0-stuck)); } if ((inputSampleL - gslew[x]) > gslew[x+2]) inputSampleL = gslew[x] + gslew[x+2]; if (-(inputSampleL - gslew[x]) > gslew[x+2]) inputSampleL = gslew[x] - gslew[x+2]; gslew[x] = inputSampleL * 0.975; if ((inputSampleR - gslew[x+1]) > gslew[x+2]) inputSampleR = gslew[x+1] + gslew[x+2]; if (-(inputSampleR - gslew[x+1]) > gslew[x+2]) inputSampleR = gslew[x+1] - gslew[x+2]; gslew[x+1] = inputSampleR * 0.975; } } //end bias routine //begin tiny hysteresis double applyHysteresis = (1.0-fabs(inputSampleL))*(1.0-fabs(inputSampleL))*0.012; hysteresisL = fmax(fmin(hysteresisL+((inputSampleL*fabs(inputSampleL))),0.011449),-0.011449)*0.999; inputSampleL += (hysteresisL*applyHysteresis); applyHysteresis = (1.0-fabs(inputSampleR))*(1.0-fabs(inputSampleR))*0.012; hysteresisR = fmax(fmin(hysteresisR+((inputSampleR*fabs(inputSampleR))),0.011449),-0.011449)*0.999; inputSampleR += (hysteresisR*applyHysteresis); //begin TapeHack2 double darkSampleL = inputSampleL; double darkSampleR = inputSampleR; if (avgPos > 31) avgPos = 0; if (slewsing > 31) { avg32L[avgPos] = darkSampleL; avg32R[avgPos] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 32; x++) {darkSampleL += avg32L[x]; darkSampleR += avg32R[x];} darkSampleL /= 32.0; darkSampleR /= 32.0; } if (slewsing > 15) { avg16L[avgPos%16] = darkSampleL; avg16R[avgPos%16] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 16; x++) {darkSampleL += avg16L[x]; darkSampleR += avg16R[x];} darkSampleL /= 16.0; darkSampleR /= 16.0; } if (slewsing > 7) { avg8L[avgPos%8] = darkSampleL; avg8R[avgPos%8] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 8; x++) {darkSampleL += avg8L[x]; darkSampleR += avg8R[x];} darkSampleL /= 8.0; darkSampleR /= 8.0; } if (slewsing > 3) { avg4L[avgPos%4] = darkSampleL; avg4R[avgPos%4] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 4; x++) {darkSampleL += avg4L[x]; darkSampleR += avg4R[x];} darkSampleL /= 4.0; darkSampleR /= 4.0; } if (slewsing > 1) { avg2L[avgPos%2] = darkSampleL; avg2R[avgPos%2] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 2; x++) {darkSampleL += avg2L[x]; darkSampleR += avg2R[x];} darkSampleL /= 2.0; darkSampleR /= 2.0; } //only update avgPos after the post-distortion filter stage double avgSlewL = fmin(fabs(lastDarkL-inputSampleL)*0.12*overallscale,1.0); avgSlewL = 1.0-(1.0-avgSlewL*1.0-avgSlewL); inputSampleL = (inputSampleL*(1.0-avgSlewL)) + (darkSampleL*avgSlewL); lastDarkL = darkSampleL; double avgSlewR = fmin(fabs(lastDarkR-inputSampleR)*0.12*overallscale,1.0); avgSlewR = 1.0-(1.0-avgSlewR*1.0-avgSlewR); inputSampleR = (inputSampleR*(1.0-avgSlewR)) + (darkSampleR*avgSlewR); lastDarkR = darkSampleR; //begin TapeHack inputSampleL = fmax(fmin(inputSampleL,2.305929007734908),-2.305929007734908); double addtwo = inputSampleL * inputSampleL; double empower = inputSampleL * addtwo; // inputSample to the third power inputSampleL -= (empower / 6.0); empower *= addtwo; // to the fifth power inputSampleL += (empower / 69.0); empower *= addtwo; //seventh inputSampleL -= (empower / 2530.08); empower *= addtwo; //ninth inputSampleL += (empower / 224985.6); empower *= addtwo; //eleventh inputSampleL -= (empower / 9979200.0f); //this is a degenerate form of a Taylor Series to approximate sin() inputSampleR = fmax(fmin(inputSampleR,2.305929007734908),-2.305929007734908); addtwo = inputSampleR * inputSampleR; empower = inputSampleR * addtwo; // inputSample to the third power inputSampleR -= (empower / 6.0); empower *= addtwo; // to the fifth power inputSampleR += (empower / 69.0); empower *= addtwo; //seventh inputSampleR -= (empower / 2530.08); empower *= addtwo; //ninth inputSampleR += (empower / 224985.6); empower *= addtwo; //eleventh inputSampleR -= (empower / 9979200.0f); //this is a degenerate form of a Taylor Series to approximate sin() darkSampleL = inputSampleL; darkSampleR = inputSampleR; if (avgPos > 31) avgPos = 0; if (slewsing > 31) { post32L[avgPos] = darkSampleL; post32R[avgPos] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 32; x++) {darkSampleL += post32L[x]; darkSampleR += post32R[x];} darkSampleL /= 32.0; darkSampleR /= 32.0; } if (slewsing > 15) { post16L[avgPos%16] = darkSampleL; post16R[avgPos%16] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 16; x++) {darkSampleL += post16L[x]; darkSampleR += post16R[x];} darkSampleL /= 16.0; darkSampleR /= 16.0; } if (slewsing > 7) { post8L[avgPos%8] = darkSampleL; post8R[avgPos%8] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 8; x++) {darkSampleL += post8L[x]; darkSampleR += post8R[x];} darkSampleL /= 8.0; darkSampleR /= 8.0; } if (slewsing > 3) { post4L[avgPos%4] = darkSampleL; post4R[avgPos%4] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 4; x++) {darkSampleL += post4L[x]; darkSampleR += post4R[x];} darkSampleL /= 4.0; darkSampleR /= 4.0; } if (slewsing > 1) { post2L[avgPos%2] = darkSampleL; post2R[avgPos%2] = darkSampleR; darkSampleL = 0.0; darkSampleR = 0.0; for (int x = 0; x < 2; x++) {darkSampleL += post2L[x]; darkSampleR += post2R[x];} darkSampleL /= 2.0; darkSampleR /= 2.0; } avgPos++; inputSampleL = (inputSampleL*(1.0-avgSlewL)) + (darkSampleL*avgSlewL); inputSampleR = (inputSampleR*(1.0-avgSlewR)) + (darkSampleR*avgSlewR); //use the previously calculated depth of the filter //begin HeadBump double headBumpSampleL = 0.0; double headBumpSampleR = 0.0; if (headBumpMix > 0.0) { headBumpL += (inputSampleL * headBumpDrive); headBumpL -= (headBumpL * headBumpL * headBumpL * (0.0618/sqrt(overallscale))); headBumpR += (inputSampleR * headBumpDrive); headBumpR -= (headBumpR * headBumpR * headBumpR * (0.0618/sqrt(overallscale))); double headBiqSampleL = (headBumpL * hdbA[hdb_a0]) + hdbA[hdb_sL1]; hdbA[hdb_sL1] = (headBumpL * hdbA[hdb_a1]) - (headBiqSampleL * hdbA[hdb_b1]) + hdbA[hdb_sL2]; hdbA[hdb_sL2] = (headBumpL * hdbA[hdb_a2]) - (headBiqSampleL * hdbA[hdb_b2]); headBumpSampleL = (headBiqSampleL * hdbB[hdb_a0]) + hdbB[hdb_sL1]; hdbB[hdb_sL1] = (headBiqSampleL * hdbB[hdb_a1]) - (headBumpSampleL * hdbB[hdb_b1]) + hdbB[hdb_sL2]; hdbB[hdb_sL2] = (headBiqSampleL * hdbB[hdb_a2]) - (headBumpSampleL * hdbB[hdb_b2]); double headBiqSampleR = (headBumpR * hdbA[hdb_a0]) + hdbA[hdb_sR1]; hdbA[hdb_sR1] = (headBumpR * hdbA[hdb_a1]) - (headBiqSampleR * hdbA[hdb_b1]) + hdbA[hdb_sR2]; hdbA[hdb_sR2] = (headBumpR * hdbA[hdb_a2]) - (headBiqSampleR * hdbA[hdb_b2]); headBumpSampleR = (headBiqSampleR * hdbB[hdb_a0]) + hdbB[hdb_sR1]; hdbB[hdb_sR1] = (headBiqSampleR * hdbB[hdb_a1]) - (headBumpSampleR * hdbB[hdb_b1]) + hdbB[hdb_sR2]; hdbB[hdb_sR2] = (headBiqSampleR * hdbB[hdb_a2]) - (headBumpSampleR * hdbB[hdb_b2]); } //end HeadBump inputSampleL += (headBumpSampleL * headBumpMix); inputSampleR += (headBumpSampleR * headBumpMix); //Dubly decode iirDecL = (iirDecL * (1.0 - iirDecFreq)) + (inputSampleL * iirDecFreq); highPart = ((inputSampleL-iirDecL)*2.628); highPart += avgDecL; avgDecL = (inputSampleL-iirDecL)*1.372; if (highPart > 1.0) highPart = 1.0; if (highPart < -1.0) highPart = -1.0; dubly = fabs(highPart); if (dubly > 0.0) { double adjust = log(1.0+(255.0*dubly))/2.40823996531; if (adjust > 0.0) dubly /= adjust; compDecL = (compDecL*(1.0-iirDecFreq))+(dubly*iirDecFreq); inputSampleL += ((highPart*compDecL)*outlyAmount); } //end Dubly decode L iirDecR = (iirDecR * (1.0 - iirDecFreq)) + (inputSampleR * iirDecFreq); highPart = ((inputSampleR-iirDecR)*2.628); highPart += avgDecR; avgDecR = (inputSampleR-iirDecR)*1.372; if (highPart > 1.0) highPart = 1.0; if (highPart < -1.0) highPart = -1.0; dubly = fabs(highPart); if (dubly > 0.0) { double adjust = log(1.0+(255.0*dubly))/2.40823996531; if (adjust > 0.0) dubly /= adjust; compDecR = (compDecR*(1.0-iirDecFreq))+(dubly*iirDecFreq); inputSampleR += ((highPart*compDecR)*outlyAmount); } //end Dubly decode R if (outputGain != 1.0) { inputSampleL *= outputGain; inputSampleR *= outputGain; } //begin ClipOnly3 as a little, compressed chunk that can be dropped into code double noise = 1.0-((double(fpdL)/UINT32_MAX)*0.076); if (wasPosClipL == true) { //current will be over if (inputSampleL0.9085097) {wasPosClipL=true;inputSampleL=(0.9085097*noise)+(lastSampleL*(1.0-noise));} if (wasNegClipL == true) { //current will be -over if (inputSampleL > lastSampleL) lastSampleL=(-0.9085097*noise)+(inputSampleL*(1.0-noise)); else lastSampleL = -0.94; } wasNegClipL = false; if (inputSampleL<-0.9085097) {wasNegClipL=true;inputSampleL=(-0.9085097*noise)+(lastSampleL*(1.0-noise));} slewL[spacing*2] = fabs(lastSampleL-inputSampleL); for (int x = spacing*2; x > 0; x--) slewL[x-1] = slewL[x]; 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]; if (wasPosClipL || wasNegClipL) { for (int x = spacing; x > 0; x--) lastSampleL += intermediateL[x]; lastSampleL /= spacing; } double finalSlew = 0.0; for (int x = spacing*2; x >= 0; x--) if (finalSlew < slewL[x]) finalSlew = slewL[x]; double postclip = 0.94 / (1.0+(finalSlew*1.3986013)); if (inputSampleL > postclip) inputSampleL = postclip; if (inputSampleL < -postclip) inputSampleL = -postclip; noise = 1.0-((double(fpdR)/UINT32_MAX)*0.076); if (wasPosClipR == true) { //current will be over if (inputSampleR0.9085097) {wasPosClipR=true;inputSampleR=(0.9085097*noise)+(lastSampleR*(1.0-noise));} if (wasNegClipR == true) { //current will be -over if (inputSampleR > lastSampleR) lastSampleR=(-0.9085097*noise)+(inputSampleR*(1.0-noise)); else lastSampleR = -0.94; } wasNegClipR = false; if (inputSampleR<-0.9085097) {wasNegClipR=true;inputSampleR=(-0.9085097*noise)+(lastSampleR*(1.0-noise));} slewR[spacing*2] = fabs(lastSampleR-inputSampleR); for (int x = spacing*2; x > 0; x--) slewR[x-1] = slewR[x]; 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]; if (wasPosClipR || wasNegClipR) { for (int x = spacing; x > 0; x--) lastSampleR += intermediateR[x]; lastSampleR /= spacing; } finalSlew = 0.0; for (int x = spacing*2; x >= 0; x--) if (finalSlew < slewR[x]) finalSlew = slewR[x]; postclip = 0.94 / (1.0+(finalSlew*1.3986013)); if (inputSampleR > postclip) inputSampleR = postclip; if (inputSampleR < -postclip) inputSampleR = -postclip; //end ClipOnly3 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++; } }