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  3. FDynamicDelayAPF

FDynamicDelayAPF

All Pass Filter with a long fractional delay which can be set per a sample.

API > API/Runtime > API/Runtime/SignalProcessing

All Pass Filter with a long fractional delay which can be set per a sample. This filter is specifically designed for reverb applications where filter delay lines are long.

   
Name FDynamicDelayAPF
Type class
Header File /Engine/Source/Runtime/SignalProcessing/Public/DSP/DynamicDelayAPF.h
Include Path #include "DSP/DynamicDelayAPF.h"

Syntax

class FDynamicDelayAPF

Constructors

Name Remarks Include Path Unreal Specifiers

FDynamicDelayAPF ( float InG,
int32 InMinDelay,
int32 InMaxDelay,
int32 InMaxNumInternalBufferSamples,
float InSampleRate
)

 InG is the filter coefficient used in the long delay all pass filter. DSP/DynamicDelayAPF.h  

Destructors

Name Remarks Include Path Unreal Specifiers

~FDynamicDelayAPF()

 Destructor. DSP/DynamicDelayAPF.h  

Variables

Protected

Name Type Remarks Include Path Unreal Specifiers
DelayLineInput FAlignedFloatBuffer   DSP/DynamicDelayAPF.h  
EaseTimeInSec float   DSP/DynamicDelayAPF.h  
FractionalDelayLine TUniquePtr< FLinearInterpFractionalDelay >   DSP/DynamicDelayAPF.h  
FractionalDelays FAlignedFloatBuffer Buffers for block processing. DSP/DynamicDelayAPF.h  
G FLinearEase Feedback/Feedforward gain coefficient. DSP/DynamicDelayAPF.h  
IntegerDelayLine TUniquePtr< FAlignedBlockBuffer > Delay line memory. DSP/DynamicDelayAPF.h  
MaxDelay int32   DSP/DynamicDelayAPF.h  
MinDelay int32   DSP/DynamicDelayAPF.h  
NumDelaySamples int32   DSP/DynamicDelayAPF.h  
NumInternalBufferSamples int32   DSP/DynamicDelayAPF.h  
WorkBufferA FAlignedFloatBuffer   DSP/DynamicDelayAPF.h  
WorkBufferB FAlignedFloatBuffer   DSP/DynamicDelayAPF.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

void ProcessAudio ( const FAlignedFloatBuffer& InSamples,
const FAlignedFloatBuffer& InDelays,
FAlignedFloatBuffer& OutSamples
)

 Processes InSamples through the all pass filter and populates OutSamples with the filter output. DSP/DynamicDelayAPF.h  

void Reset()

 Zeros the internal delay line. DSP/DynamicDelayAPF.h  

void SetEaseTimeInSec ( float InEaseTimeInSec
)

   DSP/DynamicDelayAPF.h  

void SetG ( float InG
)

 Set the APF feedback/feedforward gain coefficient. DSP/DynamicDelayAPF.h  

Protected

Name Remarks Include Path Unreal Specifiers

void ProcessAudioBlock ( const float* InSamples,
const FAlignedFloatBuffer& InFractionalDelays,
const int32 InNum,
float* OutSamples
)

 Process one block of audio. DSP/DynamicDelayAPF.h  

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