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TSpectrum Members

The following tables list the members exposed by TSpectrum.

 
Name 
Description 
 
The event is triggered after the call to the Update method. 
 
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
 
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".  
 
Name 
Description 
 
Add 
Add amplitude and phase of the ASpectrum to the current spectrum. 
 
This is the overview for the AmpltEst method overload. 
 
Compute amplitude spectrum from X. 
 
This is Assign, a member of class TAnalysis. 
 
Flip the frequency spectrum on the frequency axis. 
 
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 TSpectrum. 
 
This is DetectChannelCount, a member of class TAnalysis. 
 
Differentiate the signal in the frequency domain. 
 
Divide the calling the spectrum with ASpectrum. 
 
Filter the peak at Marks position Index from the signal and recalculate the spectrum. 
 
If all Inputs[i] are dirty the function returns true. 
 
Integrate the signal in the frequency domain. 
 
When called, the method will pass Update requests recursively to all connected objects. 
 
Notifies all connected components that this component has fresh data. 
 
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. 
 
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. 
 
Pull 
Request recalculation of the entire chain of all connected components. 
 
Calls Pull until pipeEnd is returned.  
 
This is Reset, a member of class TAnalysis. 
 
RMS 
Returns the RMS of the spectrum.  
 
Compute RMS spectrum from X. 
 
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. 
 
Sqr 
Square the Amplt and Phase of the ASpectrum and copy it to self. 
 
Subtract ASpectrum from the calling spectrum. 
 
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. 
 
Request recalculation of the data and place the result in Self. 
 
Call this method only, if SuspendNotifyUpdate is True. 
 
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. 
 
Stores the amplitude of the spectrum. 
 
Used to store the number of averages made. 
 
Returns the bandwidth of the spectrum in [Hz]. 
 
Returns the upper bandwidth edge of the signal.  
 
Returns the lower bandwidth edge of the signal. 
 
Set this property to true, to request computation using complex numbers.  
 
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 component will pass on the udpate request to the connected component. 
 
Dt 
Returns the distance in seconds between two consecutive samples of the signal on which the frequency spectrum is based. 
 
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. 
 
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. 
 
Defines the length of 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. 
 
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. 
 
The event is triggered after the call to the Update method. 
 
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. 
 
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".  
 
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. 
 
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. 
 
Set this property to True, to prevent calling OnNotifyUpdate from the Update Method. 
 
Set it to True to indicate, that valid signals will be connected to the Input or Inputs properties. 
 
Defines the level of zero padding of the source signal. 
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