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airwindows/plugins/MacAU/Parametric/Parametric.cpp

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/*
* 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. If you do
* not agree with these terms, please do not use, install, modify or redistribute this Apple
* software.
*
* In consideration of your agreement to abide by the following terms, and subject to these terms,
* Apple grants you a personal, non-exclusive license, under Apple's copyrights in this
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* notice and the following text and disclaimers in all such redistributions of the Apple Software.
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* endorse or promote products derived from the Apple Software without specific prior written
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*
* The Apple Software is provided by Apple on an "AS IS" basis. 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
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* 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;
}
}
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