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FInterpolatedLPF

API > API/Runtime > API/Runtime/SignalProcessing

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

Syntax

class FInterpolatedLPF

Constructors

Name Remarks Include Path Unreal Specifiers

FInterpolatedLPF()

 Ctor DSP/InterpolatedOnePole.h  

Variables

Protected

Name Type Remarks Include Path Unreal Specifiers
B1Curr float   DSP/InterpolatedOnePole.h  
B1Delta float   DSP/InterpolatedOnePole.h  
B1Target float   DSP/InterpolatedOnePole.h  
bIsFirstFrequencyChange bool   DSP/InterpolatedOnePole.h  
CurrInterpLength int32   DSP/InterpolatedOnePole.h  
CutoffFrequency float   DSP/InterpolatedOnePole.h  
NumChannels int32   DSP/InterpolatedOnePole.h  
NumInterpSteps int32   DSP/InterpolatedOnePole.h  
SampleRate float   DSP/InterpolatedOnePole.h  
Z1 TArray< float >   DSP/InterpolatedOnePole.h  
Z1Data float *   DSP/InterpolatedOnePole.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

void ArrayCalculateResponseInPlace ( TArrayView< float > InOutComplexValues
) const

 Apply the filter transfer function to each z-domain value in the given array (complex numbers given as interleaved floats). Passing in z-domain values on the complex unit circle will give the frequency response. DSP/InterpolatedOnePole.h  

void ClearMemory ()

 Clears memory without reevaluating coefficients. DSP/InterpolatedOnePole.h  

float GetCutoffFrequency()

   DSP/InterpolatedOnePole.h  

void Init ( float InSampleRate,
int32 InNumChannels
)

   DSP/InterpolatedOnePole.h  

void ProcessAudioBuffer ( const float*RESTRICT InputBuffer,
float*RESTRICT OutputBuffer,
const int32 NumSamples
)

 Interpolates coefficient and processes a buffer DSP/InterpolatedOnePole.h  

void ProcessAudioFrame ( const float*RESTRICT InputFrame,
float*RESTRICT OutputFrame
)

 Interpolates coefficient and processes a sample DSP/InterpolatedOnePole.h  

void ProcessBufferInPlace ( float* InOutBuffer,
int32 NumSamples
)

 Interpolates coefficient and processes a buffer DSP/InterpolatedOnePole.h  

void Reset()

 Resets the sample delay to 0. DSP/InterpolatedOnePole.h  

void StartFrequencyInterpolation ( const float InTargetFrequency,
const int32 InterpLength
)

 StartFrequencyInterpolation(): Intended use: call once at the beginning of callback, pass the callback length then call ProcessAudioFrame() exactly "InterpLength" number of times At the end of the callback, call StopFrequencyInterpolation() DSP/InterpolatedOnePole.h  
StopFrequencyInterpolation() needs to be called manually when the interpolation should be done. DSP/InterpolatedOnePole.h  

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