SpectrumCalculatorPowerSpectrumOverlapped Method (Double, Int32, Double, Double, Int32)

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Calculates power spectrum, having all FFT data in absolute values. Overlaps moving FFT window until all data is processed. The count of output FFT data is same than input data.

Namespace: Arction.Wpf.SignalProcessing
Assembly: Arction.Wpf.SignalProcessing.SignalTools (in Arction.Wpf.SignalProcessing.SignalTools.dll) Version: 10.3.1

Syntax

C++

Copy

public bool PowerSpectrumOverlapped(
	double[] samples,
	int fftWindowLength,
	double overlapPercent,
	out double[] fftData,
	out int processedSampleCount
)

Public Function PowerSpectrumOverlapped ( 
	samples As Double(),
	fftWindowLength As Integer,
	overlapPercent As Double,
	<OutAttribute> ByRef fftData As Double(),
	<OutAttribute> ByRef processedSampleCount As Integer
) As Boolean

public:
bool PowerSpectrumOverlapped(
	array<double>^ samples, 
	int fftWindowLength, 
	double overlapPercent, 
	[OutAttribute] array<double>^% fftData, 
	[OutAttribute] int% processedSampleCount
)

Parameters

samples: Type: SystemDouble
Signal samples
fftWindowLength: Type: SystemInt32
Length of moving calculation window.
overlapPercent: Type: SystemDouble
Overlapping percent. Moving FFT window is shifted by this amount for next calculation round. Valid values are 0...99
fftData: Type: SystemDouble
Output FFT data. Length equals fftWindowLenght. If samples length is less than fftWindowLength, outputs samples length of data.
processedSampleCount: Type: SystemInt32
Processed sample count. It is possible that all samples are not processed from the end, if there's not enough data for last FFT window.

Return Value

Type: Boolean
True if successful, else False.

Reference

SpectrumCalculator Class

PowerSpectrumOverlapped Overload

Arction.Wpf.SignalProcessing Namespace