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TBiSpectrumAnalyzer Members

The following tables list the members exposed by TBiSpectrumAnalyzer.

 
Name 
Description 
 
Event triggered just after the average has been applied.  
 
Event triggered just after complex spectrum has been computed, but before averaging in the complex domain.  
 
The event is triggered after the call to the Update method. 
 
If assigned, this event will be called instead of a call to Bands.Update method.  
 
Event triggered just before the average is applied.  
 
Event triggered just before spectrum type is aplied, but after averaging in the complex domain.  
 
The event is triggered just before the call to the Update method. 
 
The event is triggered after the OnAfterUpdate event. Use this event to update any associated charts or graphs or result tables. 
 
If the Input property is not assigned, the component will call OnGetInput
 
Assign the event returning the custom computed frequency spectrum to be used for computation of third order spectrum (bispectrum).  
 
The event is called after a call to InternalUpdate, OnAfterUpdate and OnDisplayUpdate from within the Update method. 
 
The event is triggered when ParamUpdate method is called. The ParamUpdate method is usually called by component editors when a value was changed by the user and the editor was "Live".  
 
If assigned, this event will be called instead of a call to Peaks.Update method.  
 
Called from the UpdateSpectrum routine. The event is called after the spectrum data is updated and before the chart is updated.  
 
Name 
Description 
 
Add 
Add amplitude and phase of the ASpectrum to the current spectrum. 
 
This is the overview for the AmpltEst method overload. 
 
This is the overview for the AmpltEst method overload. 
 
Converts the amplitude of the frequency spectrum at Freq frequency to dB according to the value of the Peaks property.  
 
Compute amplitude spectrum from X. 
 
This is Assign, a member of class TAnalysis. 
 
Flip the frequency spectrum on the frequency axis. 
 
This is the overview for the ComplexEst method overload. 
 
Compute the frequency spectrum where the Num is the numerator and Den is the denominator of the transfer function.  
 
Searches for the closes maximum of the amplitude spectrum. Returns the frequency as the result. 
 
Copy 
Copy ASpectrum to the calling spectrum. 
 
This is Destroy, a member of class TBiSpectrumAnalyzer. 
 
This is DetectChannelCount, a member of class TAnalysis. 
 
Differentiate the signal in the frequency domain. 
 
Divide the calling the spectrum with ASpectrum. 
 
This is EditorClass, a member of class TBiSpectrumAnalyzer. 
 
Filter the peak at Marks position Index from the signal and recalculate the spectrum. 
 
Filter the peak defined with a TMarkRecord record stored at position Index within Marks list from Input.Data.  
 
If all Inputs[i] are dirty the function returns true. 
 
Integrate the signal in the frequency domain. 
 
This is IntegrateSpectrum, a member of class TCustomSpectrumAnalyzer. 
 
When called, the method will pass Update requests recursively to all connected objects. 
 
Notifies all connected components that this component has fresh data. 
 
This is LoadFromStream, a member of class TSpectrumAnalyzer. 
 
Compute the logarithm of the amplitude spectrum and convert to dB. 
 
Convert marks to strings. 
 
Calls MinMaxAmplt and MinMaxPhase
 
Find minimum and maximum value of the Amplt spectrum. 
 
Find minimum and maximum value of the Phase spectrum. 
 
Mul 
Multiply the calling the spectrum with ASpectrum. 
 
NF 
Calculates the average of the noise. 
 
The method can be assigned to some other component even handler, as a notification that a parameter has changed and that Self should consider a recalculation. 
 
Return the peak closest to the Freq frequency. 
 
Find the peak nearest to the Freq frequency and return the frequenyc of the newly found peak.  
 
Returns the phase of the frequency spectrum at Freq frequency according to the value of the Peaks property.  
 
This is the overview for the PhaseEst method overload. 
 
Compute phase spectrum from X. 
 
Recursively processes all connected components backward and calls Reset method. 
 
Compute power spectrum from X. 
 
Compute the frequency spectrum where the SrcNum is the numerator and SrcDen is the denominator of the transfer function.  
 
Pull 
Request recalculation of the entire chain of all connected components. 
 
Calls Pull until pipeEnd is returned.  
 
Resets averaging and frees internal memory.  
 
Reset the frequency spectrum averaging.  
 
RMS 
Returns the RMS of the spectrum.  
 
Compute RMS spectrum from X. 
 
This is SaveToStream, a member of class TSpectrumAnalyzer. 
 
Scale the calling spectrum with Factor. 
 
Initialize spectrum to zero. 
 
SFDR 
Spurious-free-dynamic-range computes the ratio of the largest marked peak towards the second largest. 
 
Signal-to-noise-and-distortion calculates the the ratio of the maximum mark towards the rest (noise). 
 
Size 
 
SNR 
Calculates the signal-to-noise ratio. 
 
Compute the spectrum from Input.Data according to the state of the component and place the result in Dst.  
 
Sqr 
Square the Amplt and Phase of the ASpectrum and copy it to self. 
 
Subtract ASpectrum from the calling spectrum. 
 
This is the overview for the TBiSpectrumAnalyzer constructor overload. 
 
THD 
Returns the ratio of RMS of the marked peaks, excluding the first, towards the first marked peak and returns the result in [%]. 
 
THDN 
The total-harmonic-distortion-and-noise computes the sum of sqares of the rest towards the maximum marked peak. 
 
This is the overview for the TSpectrum constructor overload. 
 
This is the overview for the TSpectrumAnalyzer constructor overload. 
 
Request recalculation of the data and place the result in Self. 
 
Call the method after changing the Logarithmic property.  
 
Call this method only, if SuspendNotifyUpdate is True. 
 
Decode data from the bispectrum matrix and place it in Self.Amplt.  
 
If Stats.Recursive was False, calling this method will compute the averaged spectrum and associated statistics.  
 
Convert values to strings. 
 
Name 
Description 
 
Set active to false to suppress the propagation of the Pull request and the subsequent call to the Update method. 
 
Ready only. Returns the ratio between the original signal length and the length of the analyzed signal padded with zeros.  
 
Stores the amplitude of the spectrum. 
 
Defines the order for the autogressive spectral estimators.  
 
Used to store the number of averages made. 
 
Holds the parameters for the frequency bands.  
 
Returns the bandwidth of the spectrum in [Hz]. 
 
Returns the upper bandwidth edge of the signal.  
 
Returns the lower bandwidth edge of the signal. 
 
Parameters required by the higher order spectral analysis.  
 
Set this property to true, to request computation using complex numbers.  
 
After the first call to Update method, this property returns a pointer to the scaled complex spectrum.  
 
If True, the conjugate symmetric part of the frequency spectrum is to be computed. 
 
If True, the conjugate symmetric part of the frequency spectrum is to be computed. 
 
If True, the conjugate symmetric part of the frequency spectrum will be placed in 0.5..1.0 Fs (as returned by the FFT), and not between -0.5..0.0 Fs. 
 
If True, the conjugate symmetric part of the frequency spectrum will be placed in 0.5..1.0 Fs (as returned by the FFT), and not between -0.5..0.0 Fs. 
 
If True, the component will pass on the udpate request to the connected component. 
 
If True, calculate the cross spectrum and not the transfer function.  
 
CZT 
Holds Chirp Z-transform configuration.  
 
If True, the DC component will be removed from the signal prior to the transform to the frequency domain.  
 
This is Descriptor, a member of class TStaticSpectrumAnalyzer. 
 
Dt 
Returns the distance in seconds between two consecutive samples of the signal on which the frequency spectrum is based. 
 
The parameter for the exponential windowing function.  
 
Set this property to request computation in 32bit/64bit precision with real/complex numbers.  
 
Set this property to true to lock changes to FloatPrecision property.  
 
Defines number of harmonics to be used when calculating statistical parameters from the amplitude spectrum. 
 
Returns the frequency resolution in Hz. 
 
Connector property to obtain a pointer to the TSignal component holding the data to be processed. 
 
Connector property to obtain a pointer to the TSignal component holding the data to be processed. 
 
Connector property to obtain a pointer to the TSignal component holding the data to be processed. 
 
Connector property to obtain a pointer to a list of TSignal components holding the data to be processed. 
 
Define the integration/differenation of the frequency spectrum.  
 
Set this property to false, to request computation in 32bit floating point precision, 64bit, if true.  
 
Number to label the object when it is an item in the List. 
 
This is LdBSpan, a member of class TCustomSpectrumAnalyzer. 
 
Defines the length of the spectrum.  
 
Set it to True, to obtain the logarithm of the spectrum in dB.  
 
Defines the base of the logarithmic spectrum.  
 
This is LogMaxAmplt, a member of class TSpectrumAnalyzer. 
 
Defines the scaling of the logarithmic spectrum.  
 
Defines the span of the logarithmic spectrum in dB.  
 
Specify how to apply the logarithm to the spectrum.  
 
Defines the width of the main lobe. Each frequency component in the frequency spectrum should theoretically be infinitely thin. 
 
Stores the frequency, amplitude and phase of selected frequency bins. 
 
Stores the maximum value of the Amplt spectrum found by the MinMaxAmplt method. 
 
Holds the index at which the maximum amplitude was found by the MinMaxAmplt method. 
 
Stores the maximum value of the Phase spectrum found by the MinMaxPhase method. 
 
Defines the method to be used for frequency spectrum estimation.  
 
Stores the minimum value of the Amplt spectrum found by the MinMaxAmplt method. 
 
Stores the minimum value of the Phase spectrum found by the MinMaxPhase method. 
 
Event triggered just after the average has been applied.  
 
Event triggered just after complex spectrum has been computed, but before averaging in the complex domain.  
 
The event is triggered after the call to the Update method. 
 
If assigned, this event will be called instead of a call to Bands.Update method.  
 
Event triggered just before the average is applied.  
 
Event triggered just before spectrum type is aplied, but after averaging in the complex domain.  
 
The event is triggered just before the call to the Update method. 
 
The event is triggered after the OnAfterUpdate event. Use this event to update any associated charts or graphs or result tables. 
 
If the Input property is not assigned, the component will call OnGetInput. 
 
Assign the event returning the custom computed frequency spectrum to be used for computation of third order spectrum (bispectrum).  
 
The event is called after a call to InternalUpdate, OnAfterUpdate and OnDisplayUpdate from within the Update method. 
 
The event is triggered when ParamUpdate method is called. The ParamUpdate method is usually called by component editors when a value was changed by the user and the editor was "Live".  
 
If assigned, this event will be called instead of a call to Peaks.Update method.  
 
Called from the UpdateSpectrum routine. The event is called after the spectrum data is updated and before the chart is updated.  
 
This is Output, a member of class TSpectrumAnalyzer. 
 
Pointer to the component that manages peak analysis.  
 
Stores the phase of the spectrum.  
 
This property determines how to handle the phase of the frequency spectrum. 
 
Specify the range of the phase spectrum. 
 
Defines the units of phase. (radian, degrees). 
 
Returns the state of the pipe after the last update. 
 
Holds the parameters needed to generate a spectrum analysis report. Requires that the descriptor property is properly filled up.  
 
Before the frequency analysis, the signal can be circularly rotated by a specified number of samples. Rotation defines the number of samples.  
 
Defines how to remove the constant (running) phase from the phase spectrum.  
 
Defines the sampling frequency of the signal on which the frequency spectrum is based. 
 
Defines the length of the signal on which the frequency spectrum is based in seconds. 
 
Frequency spectrum will be scaled by a scale factor.  
 
Specifies the attenuation of the main sidelobe in dB. This parameter applies only, if you use the Kaiser or Chebyshev window.  
 
The scaling factor applied to the frequency spectrum.  
 
Specifies the spectrum type to be computed.  
 
Defines the parameters for the averaging and statistical analysis.  
 
This is SupportComplexSpectra, a member of class TSpectrumAnalyzer. 
 
Set this property to True, to prevent calling OnNotifyUpdate from the Update Method. 
 
If True, the phase of the phase spectrum will be "unwrapped".  
 
Set it to True to indicate, that valid signals will be connected to the Input or Inputs properties. 
 
Specifies the window type to be used. Windows decrease spectral leakage, but also decrease spectral resolution.  
 
Defines the level of zero padding of the source signal. 
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