Navigation
API > API/Plugins > API/Plugins/AudioSynesthesiaCore
FLoudnessAnalyzer will calculate perceptual energy or loudness one window at a time. This analyzer only handles mono audio. See FMultichannelLoudnessAnalyzer for multichannel support.
| Name | FLoudnessAnalyzer |
| Type | class |
| Header File | /Engine/Plugins/Runtime/AudioSynesthesia/Source/AudioSynesthesiaCore/Public/LoudnessAnalyzer.h |
| Include Path | #include "LoudnessAnalyzer.h" |
Syntax
class FLoudnessAnalyzer
Constructors
| Name | Remarks | Include Path | Unreal Specifiers |
|---|---|---|---|
FLoudnessAnalyzer
(
float InSampleRate, |
Construct analyzer | LoudnessAnalyzer.h |
Variables
Protected
| Name | Type | Remarks | Include Path | Unreal Specifiers |
|---|---|---|---|---|
| ActualFFTSize | int32 | LoudnessAnalyzer.h | ||
| ComplexSpectrum | FAlignedFloatBuffer | LoudnessAnalyzer.h | ||
| CurveWeights | FAlignedFloatBuffer | LoudnessAnalyzer.h | ||
| EnergyScale | float | Scale factor used to normalize between differing window sizes and fft sizes | LoudnessAnalyzer.h | |
| FFT | TUniquePtr< IFFTAlgorithm > | LoudnessAnalyzer.h | ||
| FFTFreqSize | int32 | Number of FFTFrequency bins worth looking at. | LoudnessAnalyzer.h | |
| MaxFreqIndex | int32 | LoudnessAnalyzer.h | ||
| MinFreqIndex | int32 | LoudnessAnalyzer.h | ||
| RealSpectrum | FAlignedFloatBuffer | LoudnessAnalyzer.h | ||
| Settings | FLoudnessAnalyzerSettings | LoudnessAnalyzer.h | ||
| Window | FAlignedFloatBuffer | LoudnessAnalyzer.h | ||
| WindowedSamples | FAlignedFloatBuffer | LoudnessAnalyzer.h |
Functions
Public
| Name | Remarks | Include Path | Unreal Specifiers |
|---|---|---|---|
float CalculateLoudness
(
TArrayView< const float > InSampleView |
Calculate the loudness for the input samples. | LoudnessAnalyzer.h | |
float CalculatePerceptualEnergy
(
TArrayView< const float > InSampleView |
Calculate the perceptual energy for the input samples. | LoudnessAnalyzer.h | |
const FLoudnessAnalyzerSettings & GetSettings() |
Return const reference to settings used inside this analyzer. | LoudnessAnalyzer.h |
Static
| Name | Remarks | Include Path | Unreal Specifiers |
|---|---|---|---|
static float ConvertPerceptualEnergyToLKFS
(
float InPerceptualEnergy |
Convert from perceptual energy to loudness [LKFS = -0.691 + 10 * log_10(Energy)] | LoudnessAnalyzer.h | |
static float ConvertPerceptualEnergyToLoudness
(
float InPerceptualEnergy |
Convert from perceptual energy to loudness [Loudness = 10 * log_10(Energy)] | LoudnessAnalyzer.h |