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424 lines
15 KiB
C++
Executable file
424 lines
15 KiB
C++
Executable file
/*
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* File: AQuickVoiceClip.cpp
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*
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* Version: 1.0
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*
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* Created: 10/3/13
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*
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* Copyright: Copyright © 2013 Airwindows, Airwindows uses the MIT license
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*
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* Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. ("Apple") in
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* consideration of your agreement to the following terms, and your use, installation, modification
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* or redistribution of this Apple software constitutes acceptance of these terms. If you do
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* not agree with these terms, please do not use, install, modify or redistribute this Apple
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* software.
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*
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* In consideration of your agreement to abide by the following terms, and subject to these terms,
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* Apple grants you a personal, non-exclusive license, under Apple's copyrights in this
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* original Apple software (the "Apple Software"), to use, reproduce, modify and redistribute the
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* Apple Software, with or without modifications, in source and/or binary forms; provided that if you
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* redistribute the Apple Software in its entirety and without modifications, you must retain this
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* notice and the following text and disclaimers in all such redistributions of the Apple Software.
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* Neither the name, trademarks, service marks or logos of Apple Computer, Inc. may be used to
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* endorse or promote products derived from the Apple Software without specific prior written
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* permission from Apple. Except as expressly stated in this notice, no other rights or
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* licenses, express or implied, are granted by Apple herein, including but not limited to any
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* patent rights that may be infringed by your derivative works or by other works in which the
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* Apple Software may be incorporated.
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*
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* The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR
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* IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE
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* OR IN COMBINATION WITH YOUR PRODUCTS.
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*
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* IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE,
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* REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER
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* UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN
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* IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*=============================================================================
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AQuickVoiceClip.cpp
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=============================================================================*/
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#include "AQuickVoiceClip.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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COMPONENT_ENTRY(AQuickVoiceClip)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// AQuickVoiceClip::AQuickVoiceClip
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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AQuickVoiceClip::AQuickVoiceClip(AudioUnit component)
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: AUEffectBase(component)
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{
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CreateElements();
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Globals()->UseIndexedParameters(kNumberOfParameters);
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SetParameter(kParam_One, kDefaultValue_ParamOne );
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#if AU_DEBUG_DISPATCHER
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mDebugDispatcher = new AUDebugDispatcher (this);
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#endif
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// AQuickVoiceClip::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult AQuickVoiceClip::GetParameterValueStrings(AudioUnitScope inScope,
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AudioUnitParameterID inParameterID,
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CFArrayRef * outStrings)
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{
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return kAudioUnitErr_InvalidProperty;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// AQuickVoiceClip::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult AQuickVoiceClip::GetParameterInfo(AudioUnitScope inScope,
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AudioUnitParameterID inParameterID,
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AudioUnitParameterInfo &outParameterInfo )
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{
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ComponentResult result = noErr;
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outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable
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| kAudioUnitParameterFlag_IsReadable;
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if (inScope == kAudioUnitScope_Global) {
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switch(inParameterID)
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{
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case kParam_One:
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AUBase::FillInParameterName (outParameterInfo, kParameterOneName, false);
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outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
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outParameterInfo.minValue = 30.0;
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outParameterInfo.maxValue = 3000.0;
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outParameterInfo.defaultValue = kDefaultValue_ParamOne;
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break;
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default:
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result = kAudioUnitErr_InvalidParameter;
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break;
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}
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} else {
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result = kAudioUnitErr_InvalidParameter;
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}
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return result;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// AQuickVoiceClip::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult AQuickVoiceClip::GetPropertyInfo (AudioUnitPropertyID inID,
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AudioUnitScope inScope,
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AudioUnitElement inElement,
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UInt32 & outDataSize,
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Boolean & outWritable)
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{
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return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// AQuickVoiceClip::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult AQuickVoiceClip::GetProperty( AudioUnitPropertyID inID,
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AudioUnitScope inScope,
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AudioUnitElement inElement,
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void * outData )
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{
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return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
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}
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// AQuickVoiceClip::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult AQuickVoiceClip::Initialize()
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{
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ComponentResult result = AUEffectBase::Initialize();
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if (result == noErr)
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Reset(kAudioUnitScope_Global, 0);
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return result;
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}
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#pragma mark ____AQuickVoiceClipEffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// AQuickVoiceClip::AQuickVoiceClipKernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void AQuickVoiceClip::AQuickVoiceClipKernel::Reset()
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{
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ataLast6Sample = ataLast5Sample = ataLast4Sample = ataLast3Sample = ataLast2Sample = ataLast1Sample = 0.0;
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ataHalfwaySample = ataHalfDrySample = ataHalfDiffSample = 0.0;
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ataLastDiffSample = ataDrySample = ataDiffSample = ataPrevDiffSample = 0.0;
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ataK1 = -0.646; //first FIR shaping of interpolated sample, brightens
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ataK2 = 0.311; //second FIR shaping of interpolated sample, thickens
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ataK6 = -0.093; //third FIR shaping of interpolated sample, brings air
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ataK7 = 0.057; //fourth FIR shaping of interpolated sample, thickens
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ataK8 = -0.023; //fifth FIR shaping of interpolated sample, brings air
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ataK3 = 0.114; //add raw to interpolated dry, toughens
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ataK4 = 0.886; //remainder of interpolated dry, adds up to 1.0
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ataK5 = 0.431; //subtract this much prev. diff sample, brightens. 0.431 becomes flat
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lastSample = 0.0;
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lastOutSample = 0.0;
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lastOut2Sample = 0.0;
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lastOut3Sample = 0.0;
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lpDepth = 0.0;
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overshoot = 0.0;
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overall = 0;
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iirSampleA = 0.0;
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iirSampleB = 0.0;
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iirSampleC = 0.0;
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iirSampleD = 0.0;
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flip = false;
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fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// AQuickVoiceClip::AQuickVoiceClipKernel::Process
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void AQuickVoiceClip::AQuickVoiceClipKernel::Process( const Float32 *inSourceP,
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Float32 *inDestP,
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UInt32 inFramesToProcess,
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UInt32 inNumChannels,
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bool &ioSilence )
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{
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UInt32 nSampleFrames = inFramesToProcess;
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const Float32 *sourceP = inSourceP;
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Float32 *destP = inDestP;
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Float64 overallscale = 1.0;
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overallscale /= 44100.0;
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overallscale *= GetSampleRate();
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Float64 softness = 0.484416;
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Float64 hardness = 1.0 - softness;
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Float64 iirAmount = GetParameter( kParam_One )/8000.0;
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iirAmount /= overallscale;
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Float64 altAmount = (1.0 - iirAmount);
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Float64 cancelnew = 0.0682276;
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Float64 cancelold = 1.0 - cancelnew;
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Float64 maxRecent;
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Float64 lpSpeed = 0.0009;
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Float64 cliplevel = 0.98;
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Float64 refclip = 0.5; //preset to cut out gain quite a lot. 91%? no touchy unless clip
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Float64 inputSample;
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Float64 passThrough;
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Float64 outputSample;
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bool clipOnset;
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Float64 drySample;
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while (nSampleFrames-- > 0) {
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inputSample = *sourceP;
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if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17;
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passThrough = ataDrySample = inputSample;
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ataHalfDrySample = ataHalfwaySample = (inputSample + ataLast1Sample + (ataLast2Sample*ataK1) + (ataLast3Sample*ataK2) + (ataLast4Sample*ataK6) + (ataLast5Sample*ataK7) + (ataLast6Sample*ataK8)) / 2.0;
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ataLast6Sample = ataLast5Sample; ataLast5Sample = ataLast4Sample; ataLast4Sample = ataLast3Sample; ataLast3Sample = ataLast2Sample; ataLast2Sample = ataLast1Sample; ataLast1Sample = inputSample;
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//setting up oversampled special antialiasing
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clipOnset = false;
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maxRecent = fabs( ataLast6Sample );
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if (fabs( ataLast5Sample ) > maxRecent ) maxRecent = fabs( ataLast5Sample );
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if (fabs( ataLast4Sample ) > maxRecent ) maxRecent = fabs( ataLast4Sample );
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if (fabs( ataLast3Sample ) > maxRecent ) maxRecent = fabs( ataLast3Sample );
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if (fabs( ataLast2Sample ) > maxRecent ) maxRecent = fabs( ataLast2Sample );
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if (fabs( ataLast1Sample ) > maxRecent ) maxRecent = fabs( ataLast1Sample );
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if (fabs( inputSample ) > maxRecent ) maxRecent = fabs( inputSample );
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//this gives us something that won't cut out in zero crossings, to interpolate with
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maxRecent *= 2.0;
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//by refclip this is 1.0 and fully into the antialiasing
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if (maxRecent > 1.0) maxRecent = 1.0;
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//and it tops out at 1. Higher means more antialiasing, lower blends into passThrough without antialiasing
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ataHalfwaySample -= overall;
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//subtract dist-cancel from input after getting raw input, before doing anything
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drySample = ataHalfwaySample;
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if (lastSample >= refclip)
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{
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lpDepth += 0.1;
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if (ataHalfwaySample < refclip)
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{
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lastSample = ((refclip*hardness) + (ataHalfwaySample * softness));
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}
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else lastSample = refclip;
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}
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if (lastSample <= -refclip)
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{
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lpDepth += 0.1;
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if (ataHalfwaySample > -refclip)
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{
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lastSample = ((-refclip*hardness) + (ataHalfwaySample * softness));
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}
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else lastSample = -refclip;
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}
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if (ataHalfwaySample > refclip)
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{
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lpDepth += 0.1;
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if (lastSample < refclip)
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{
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ataHalfwaySample = ((refclip*hardness) + (lastSample * softness));
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}
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else ataHalfwaySample = refclip;
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}
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if (ataHalfwaySample < -refclip)
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{
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lpDepth += 0.1;
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if (lastSample > -refclip)
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{
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ataHalfwaySample = ((-refclip*hardness) + (lastSample * softness));
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}
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else ataHalfwaySample = -refclip;
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}
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outputSample = lastSample;
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lastSample = ataHalfwaySample;
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ataHalfwaySample = outputSample;
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//swap around in a circle for one final ADClip,
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//this time not tracking overshoot anymore
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//end interpolated sample
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//begin raw sample- inputSample and ataDrySample handled separately here
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inputSample -= overall;
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//subtract dist-cancel from input after getting raw input, before doing anything
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drySample = inputSample;
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if (lastSample >= refclip)
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{
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lpDepth += 0.1;
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if (inputSample < refclip)
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{
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lastSample = ((refclip*hardness) + (inputSample * softness));
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}
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else lastSample = refclip;
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}
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if (lastSample <= -refclip)
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{
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lpDepth += 0.1;
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if (inputSample > -refclip)
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{
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lastSample = ((-refclip*hardness) + (inputSample * softness));
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}
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else lastSample = -refclip;
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}
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if (inputSample > refclip)
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{
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lpDepth += 0.1;
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if (lastSample < refclip)
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{
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inputSample = ((refclip*hardness) + (lastSample * softness));
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}
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else inputSample = refclip;
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}
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if (inputSample < -refclip)
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{
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lpDepth += 0.1;
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if (lastSample > -refclip)
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{
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inputSample = ((-refclip*hardness) + (lastSample * softness));
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}
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else inputSample = -refclip;
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}
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outputSample = lastSample;
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lastSample = inputSample;
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inputSample = outputSample;
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//end raw sample
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ataHalfDrySample = (ataDrySample*ataK3)+(ataHalfDrySample*ataK4);
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ataHalfDiffSample = (ataHalfwaySample - ataHalfDrySample)/2.0;
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ataLastDiffSample = ataDiffSample*ataK5;
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ataDiffSample = (inputSample - ataDrySample)/2.0;
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ataDiffSample += ataHalfDiffSample;
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ataDiffSample -= ataLastDiffSample;
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inputSample = ataDrySample;
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inputSample += ataDiffSample;
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overall = (overall * cancelold) + (ataDiffSample * cancelnew);
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//apply all the diffs to a lowpassed IIR
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if (flip)
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{
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iirSampleA = (iirSampleA * altAmount) + (inputSample * iirAmount);
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inputSample -= iirSampleA;
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iirSampleC = (iirSampleC * altAmount) + (passThrough * iirAmount);
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passThrough -= iirSampleC;
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}
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else
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{
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iirSampleB = (iirSampleB * altAmount) + (inputSample * iirAmount);
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inputSample -= iirSampleB;
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iirSampleD = (iirSampleD * altAmount) + (passThrough * iirAmount);
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passThrough -= iirSampleD;
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}
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flip = !flip;
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//highpass section
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lastOut3Sample = lastOut2Sample;
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lastOut2Sample = lastOutSample;
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lastOutSample = inputSample;
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lpDepth -= lpSpeed;
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if (lpDepth > 0.0)
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{
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if (lpDepth > 1.0) lpDepth = 1.0;
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inputSample *= (1.0-lpDepth);
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inputSample += (((lastOutSample + lastOut2Sample + lastOut3Sample) / 3.6)*lpDepth);
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}
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if (lpDepth < 0.0) lpDepth = 0.0;
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inputSample *= (1.0-maxRecent);
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inputSample += (passThrough * maxRecent);
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//there's our raw signal, without antialiasing. Brings up low level stuff and softens more when hot
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if (inputSample > cliplevel) inputSample = cliplevel;
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if (inputSample < -cliplevel) inputSample = -cliplevel;
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//final iron bar
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//begin 32 bit floating point dither
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int expon; frexpf((float)inputSample, &expon);
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fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
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inputSample += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
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//end 32 bit floating point dither
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*destP = inputSample;
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sourceP += inNumChannels; destP += inNumChannels;
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}
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}
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