/* * File: Parametric.cpp * * Version: 1.0 * * Created: 4/22/24 * * Copyright: Copyright © 2024 Airwindows, Airwindows uses the MIT license * * Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. ("Apple") in * consideration of your agreement to the following terms, and your use, installation, modification * or redistribution of this Apple software constitutes acceptance of these terms. 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APPLE MAKES NO WARRANTIES, EXPRESS OR * IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE * OR IN COMBINATION WITH YOUR PRODUCTS. * * IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, * REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER * UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN * IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ /*============================================================================= Parametric.cpp =============================================================================*/ #include "Parametric.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ COMPONENT_ENTRY(Parametric) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Parametric::Parametric //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parametric::Parametric(AudioUnit component) : AUEffectBase(component) { CreateElements(); Globals()->UseIndexedParameters(kNumberOfParameters); SetParameter(kParam_TRF, kDefaultValue_ParamTRF ); SetParameter(kParam_TRG, kDefaultValue_ParamTRG ); SetParameter(kParam_TRR, kDefaultValue_ParamTRR ); SetParameter(kParam_HMF, kDefaultValue_ParamHMF ); SetParameter(kParam_HMG, kDefaultValue_ParamHMG ); SetParameter(kParam_HMR, kDefaultValue_ParamHMR ); SetParameter(kParam_LMF, kDefaultValue_ParamLMF ); SetParameter(kParam_LMG, kDefaultValue_ParamLMG ); SetParameter(kParam_LMR, kDefaultValue_ParamLMR ); SetParameter(kParam_DW, kDefaultValue_ParamDW ); #if AU_DEBUG_DISPATCHER mDebugDispatcher = new AUDebugDispatcher (this); #endif } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Parametric::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Parametric::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Parametric::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Parametric::GetParameterInfo(AudioUnitScope inScope, AudioUnitParameterID inParameterID, AudioUnitParameterInfo &outParameterInfo ) { ComponentResult result = noErr; outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable | kAudioUnitParameterFlag_IsReadable; if (inScope == kAudioUnitScope_Global) { switch(inParameterID) { case kParam_TRF: AUBase::FillInParameterName (outParameterInfo, kParameterTRFName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamTRF; break; case kParam_TRG: AUBase::FillInParameterName (outParameterInfo, kParameterTRGName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamTRG; break; case kParam_TRR: AUBase::FillInParameterName (outParameterInfo, kParameterTRRName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamTRR; break; case kParam_HMF: AUBase::FillInParameterName (outParameterInfo, kParameterHMFName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamHMF; break; case kParam_HMG: AUBase::FillInParameterName (outParameterInfo, kParameterHMGName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamHMG; break; case kParam_HMR: AUBase::FillInParameterName (outParameterInfo, kParameterHMRName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamHMR; break; case kParam_LMF: AUBase::FillInParameterName (outParameterInfo, kParameterLMFName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamLMF; break; case kParam_LMG: AUBase::FillInParameterName (outParameterInfo, kParameterLMGName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamLMG; break; case kParam_LMR: AUBase::FillInParameterName (outParameterInfo, kParameterLMRName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamLMR; break; case kParam_DW: AUBase::FillInParameterName (outParameterInfo, kParameterDWName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamDW; break; default: result = kAudioUnitErr_InvalidParameter; break; } } else { result = kAudioUnitErr_InvalidParameter; } return result; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Parametric::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Parametric::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Parametric::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Parametric::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // Parametric::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Parametric::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____ParametricEffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Parametric::ParametricKernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Parametric::ParametricKernel::Reset() { for (int x = 0; x < biqs_total; x++) { high[x] = 0.0; hmid[x] = 0.0; lmid[x] = 0.0; } fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Parametric::ParametricKernel::Process //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Parametric::ParametricKernel::Process( const Float32 *inSourceP, Float32 *inDestP, UInt32 inFramesToProcess, UInt32 inNumChannels, bool &ioSilence ) { UInt32 nSampleFrames = inFramesToProcess; const Float32 *sourceP = inSourceP; Float32 *destP = inDestP; double overallscale = 1.0; overallscale /= 44100.0; overallscale *= GetSampleRate(); high[biqs_freq] = (((pow(GetParameter( kParam_TRF ),3)*14500.0)+1500.0)/GetSampleRate()); if (high[biqs_freq] < 0.0001) high[biqs_freq] = 0.0001; high[biqs_nonlin] = GetParameter( kParam_TRG ); high[biqs_level] = (high[biqs_nonlin]*2.0)-1.0; if (high[biqs_level] > 0.0) high[biqs_level] *= 2.0; high[biqs_reso] = ((0.5+(high[biqs_nonlin]*0.5)+sqrt(high[biqs_freq]))-(1.0-pow(1.0-GetParameter( kParam_TRR ),2.0)))+0.5+(high[biqs_nonlin]*0.5); double K = tan(M_PI * high[biqs_freq]); double norm = 1.0 / (1.0 + K / (high[biqs_reso]*1.93185165) + K * K); high[biqs_a0] = K / (high[biqs_reso]*1.93185165) * norm; high[biqs_b1] = 2.0 * (K * K - 1.0) * norm; high[biqs_b2] = (1.0 - K / (high[biqs_reso]*1.93185165) + K * K) * norm; norm = 1.0 / (1.0 + K / (high[biqs_reso]*0.70710678) + K * K); high[biqs_c0] = K / (high[biqs_reso]*0.70710678) * norm; high[biqs_d1] = 2.0 * (K * K - 1.0) * norm; high[biqs_d2] = (1.0 - K / (high[biqs_reso]*0.70710678) + K * K) * norm; norm = 1.0 / (1.0 + K / (high[biqs_reso]*0.51763809) + K * K); high[biqs_e0] = K / (high[biqs_reso]*0.51763809) * norm; high[biqs_f1] = 2.0 * (K * K - 1.0) * norm; high[biqs_f2] = (1.0 - K / (high[biqs_reso]*0.51763809) + K * K) * norm; //high hmid[biqs_freq] = (((pow(GetParameter( kParam_HMF ),3)*6400.0)+600.0)/GetSampleRate()); if (hmid[biqs_freq] < 0.0001) hmid[biqs_freq] = 0.0001; hmid[biqs_nonlin] = GetParameter( kParam_HMG ); hmid[biqs_level] = (hmid[biqs_nonlin]*2.0)-1.0; if (hmid[biqs_level] > 0.0) hmid[biqs_level] *= 2.0; hmid[biqs_reso] = ((0.5+(hmid[biqs_nonlin]*0.5)+sqrt(hmid[biqs_freq]))-(1.0-pow(1.0-GetParameter( kParam_HMR ),2.0)))+0.5+(hmid[biqs_nonlin]*0.5); K = tan(M_PI * hmid[biqs_freq]); norm = 1.0 / (1.0 + K / (hmid[biqs_reso]*1.93185165) + K * K); hmid[biqs_a0] = K / (hmid[biqs_reso]*1.93185165) * norm; hmid[biqs_b1] = 2.0 * (K * K - 1.0) * norm; hmid[biqs_b2] = (1.0 - K / (hmid[biqs_reso]*1.93185165) + K * K) * norm; norm = 1.0 / (1.0 + K / (hmid[biqs_reso]*0.70710678) + K * K); hmid[biqs_c0] = K / (hmid[biqs_reso]*0.70710678) * norm; hmid[biqs_d1] = 2.0 * (K * K - 1.0) * norm; hmid[biqs_d2] = (1.0 - K / (hmid[biqs_reso]*0.70710678) + K * K) * norm; norm = 1.0 / (1.0 + K / (hmid[biqs_reso]*0.51763809) + K * K); hmid[biqs_e0] = K / (hmid[biqs_reso]*0.51763809) * norm; hmid[biqs_f1] = 2.0 * (K * K - 1.0) * norm; hmid[biqs_f2] = (1.0 - K / (hmid[biqs_reso]*0.51763809) + K * K) * norm; //hmid lmid[biqs_freq] = (((pow(GetParameter( kParam_LMF ),3)*2200.0)+20.0)/GetSampleRate()); if (lmid[biqs_freq] < 0.00001) lmid[biqs_freq] = 0.00001; lmid[biqs_nonlin] = GetParameter( kParam_LMG ); lmid[biqs_level] = (lmid[biqs_nonlin]*2.0)-1.0; if (lmid[biqs_level] > 0.0) lmid[biqs_level] *= 2.0; lmid[biqs_reso] = ((0.5+(lmid[biqs_nonlin]*0.5)+sqrt(lmid[biqs_freq]))-(1.0-pow(1.0-GetParameter( kParam_LMR ),2.0)))+0.5+(lmid[biqs_nonlin]*0.5); K = tan(M_PI * lmid[biqs_freq]); norm = 1.0 / (1.0 + K / (lmid[biqs_reso]*1.93185165) + K * K); lmid[biqs_a0] = K / (lmid[biqs_reso]*1.93185165) * norm; lmid[biqs_b1] = 2.0 * (K * K - 1.0) * norm; lmid[biqs_b2] = (1.0 - K / (lmid[biqs_reso]*1.93185165) + K * K) * norm; norm = 1.0 / (1.0 + K / (lmid[biqs_reso]*0.70710678) + K * K); lmid[biqs_c0] = K / (lmid[biqs_reso]*0.70710678) * norm; lmid[biqs_d1] = 2.0 * (K * K - 1.0) * norm; lmid[biqs_d2] = (1.0 - K / (lmid[biqs_reso]*0.70710678) + K * K) * norm; norm = 1.0 / (1.0 + K / (lmid[biqs_reso]*0.51763809) + K * K); lmid[biqs_e0] = K / (lmid[biqs_reso]*0.51763809) * norm; lmid[biqs_f1] = 2.0 * (K * K - 1.0) * norm; lmid[biqs_f2] = (1.0 - K / (lmid[biqs_reso]*0.51763809) + K * K) * norm; //lmid double wet = GetParameter( kParam_DW ); while (nSampleFrames-- > 0) { double inputSample = *sourceP; if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17; //begin Stacked Biquad With Reversed Neutron Flow L high[biqs_outL] = inputSample * fabs(high[biqs_level]); high[biqs_dis] = fabs(high[biqs_a0] * (1.0+(high[biqs_outL]*high[biqs_nonlin]))); if (high[biqs_dis] > 1.0) high[biqs_dis] = 1.0; high[biqs_temp] = (high[biqs_outL] * high[biqs_dis]) + high[biqs_aL1]; high[biqs_aL1] = high[biqs_aL2] - (high[biqs_temp]*high[biqs_b1]); high[biqs_aL2] = (high[biqs_outL] * -high[biqs_dis]) - (high[biqs_temp]*high[biqs_b2]); high[biqs_outL] = high[biqs_temp]; high[biqs_dis] = fabs(high[biqs_c0] * (1.0+(high[biqs_outL]*high[biqs_nonlin]))); if (high[biqs_dis] > 1.0) high[biqs_dis] = 1.0; high[biqs_temp] = (high[biqs_outL] * high[biqs_dis]) + high[biqs_cL1]; high[biqs_cL1] = high[biqs_cL2] - (high[biqs_temp]*high[biqs_d1]); high[biqs_cL2] = (high[biqs_outL] * -high[biqs_dis]) - (high[biqs_temp]*high[biqs_d2]); high[biqs_outL] = high[biqs_temp]; high[biqs_dis] = fabs(high[biqs_e0] * (1.0+(high[biqs_outL]*high[biqs_nonlin]))); if (high[biqs_dis] > 1.0) high[biqs_dis] = 1.0; high[biqs_temp] = (high[biqs_outL] * high[biqs_dis]) + high[biqs_eL1]; high[biqs_eL1] = high[biqs_eL2] - (high[biqs_temp]*high[biqs_f1]); high[biqs_eL2] = (high[biqs_outL] * -high[biqs_dis]) - (high[biqs_temp]*high[biqs_f2]); high[biqs_outL] = high[biqs_temp]; high[biqs_outL] *= high[biqs_level]; if (high[biqs_level] > 1.0) high[biqs_outL] *= high[biqs_level]; //end Stacked Biquad With Reversed Neutron Flow L //begin Stacked Biquad With Reversed Neutron Flow L hmid[biqs_outL] = inputSample * fabs(hmid[biqs_level]); hmid[biqs_dis] = fabs(hmid[biqs_a0] * (1.0+(hmid[biqs_outL]*hmid[biqs_nonlin]))); if (hmid[biqs_dis] > 1.0) hmid[biqs_dis] = 1.0; hmid[biqs_temp] = (hmid[biqs_outL] * hmid[biqs_dis]) + hmid[biqs_aL1]; hmid[biqs_aL1] = hmid[biqs_aL2] - (hmid[biqs_temp]*hmid[biqs_b1]); hmid[biqs_aL2] = (hmid[biqs_outL] * -hmid[biqs_dis]) - (hmid[biqs_temp]*hmid[biqs_b2]); hmid[biqs_outL] = hmid[biqs_temp]; hmid[biqs_dis] = fabs(hmid[biqs_c0] * (1.0+(hmid[biqs_outL]*hmid[biqs_nonlin]))); if (hmid[biqs_dis] > 1.0) hmid[biqs_dis] = 1.0; hmid[biqs_temp] = (hmid[biqs_outL] * hmid[biqs_dis]) + hmid[biqs_cL1]; hmid[biqs_cL1] = hmid[biqs_cL2] - (hmid[biqs_temp]*hmid[biqs_d1]); hmid[biqs_cL2] = (hmid[biqs_outL] * -hmid[biqs_dis]) - (hmid[biqs_temp]*hmid[biqs_d2]); hmid[biqs_outL] = hmid[biqs_temp]; hmid[biqs_dis] = fabs(hmid[biqs_e0] * (1.0+(hmid[biqs_outL]*hmid[biqs_nonlin]))); if (hmid[biqs_dis] > 1.0) hmid[biqs_dis] = 1.0; hmid[biqs_temp] = (hmid[biqs_outL] * hmid[biqs_dis]) + hmid[biqs_eL1]; hmid[biqs_eL1] = hmid[biqs_eL2] - (hmid[biqs_temp]*hmid[biqs_f1]); hmid[biqs_eL2] = (hmid[biqs_outL] * -hmid[biqs_dis]) - (hmid[biqs_temp]*hmid[biqs_f2]); hmid[biqs_outL] = hmid[biqs_temp]; hmid[biqs_outL] *= hmid[biqs_level]; if (hmid[biqs_level] > 1.0) hmid[biqs_outL] *= hmid[biqs_level]; //end Stacked Biquad With Reversed Neutron Flow L //begin Stacked Biquad With Reversed Neutron Flow L lmid[biqs_outL] = inputSample * fabs(lmid[biqs_level]); lmid[biqs_dis] = fabs(lmid[biqs_a0] * (1.0+(lmid[biqs_outL]*lmid[biqs_nonlin]))); if (lmid[biqs_dis] > 1.0) lmid[biqs_dis] = 1.0; lmid[biqs_temp] = (lmid[biqs_outL] * lmid[biqs_dis]) + lmid[biqs_aL1]; lmid[biqs_aL1] = lmid[biqs_aL2] - (lmid[biqs_temp]*lmid[biqs_b1]); lmid[biqs_aL2] = (lmid[biqs_outL] * -lmid[biqs_dis]) - (lmid[biqs_temp]*lmid[biqs_b2]); lmid[biqs_outL] = lmid[biqs_temp]; lmid[biqs_dis] = fabs(lmid[biqs_c0] * (1.0+(lmid[biqs_outL]*lmid[biqs_nonlin]))); if (lmid[biqs_dis] > 1.0) lmid[biqs_dis] = 1.0; lmid[biqs_temp] = (lmid[biqs_outL] * lmid[biqs_dis]) + lmid[biqs_cL1]; lmid[biqs_cL1] = lmid[biqs_cL2] - (lmid[biqs_temp]*lmid[biqs_d1]); lmid[biqs_cL2] = (lmid[biqs_outL] * -lmid[biqs_dis]) - (lmid[biqs_temp]*lmid[biqs_d2]); lmid[biqs_outL] = lmid[biqs_temp]; lmid[biqs_dis] = fabs(lmid[biqs_e0] * (1.0+(lmid[biqs_outL]*lmid[biqs_nonlin]))); if (lmid[biqs_dis] > 1.0) lmid[biqs_dis] = 1.0; lmid[biqs_temp] = (lmid[biqs_outL] * lmid[biqs_dis]) + lmid[biqs_eL1]; lmid[biqs_eL1] = lmid[biqs_eL2] - (lmid[biqs_temp]*lmid[biqs_f1]); lmid[biqs_eL2] = (lmid[biqs_outL] * -lmid[biqs_dis]) - (lmid[biqs_temp]*lmid[biqs_f2]); lmid[biqs_outL] = lmid[biqs_temp]; lmid[biqs_outL] *= lmid[biqs_level]; if (lmid[biqs_level] > 1.0) lmid[biqs_outL] *= lmid[biqs_level]; //end Stacked Biquad With Reversed Neutron Flow L double parametric = high[biqs_outL] + hmid[biqs_outL] + lmid[biqs_outL]; inputSample += (parametric * wet); //purely a parallel filter stage here //begin 32 bit floating point dither int expon; frexpf((float)inputSample, &expon); fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5; inputSample += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62)); //end 32 bit floating point dither *destP = inputSample; sourceP += inNumChannels; destP += inNumChannels; } }