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WgtFunction


Unit:SDL_fourier
Class:TFastFourier
Declaration:property WgtFunction[ix: integer]: double;

The array property WgtFunction can be used to specify a user-defined window function. This user-defined function is only active if the property WeightingWindow is set to fwUserDef. The array WgtFunction contains SpectrumSize coefficients which are multiplied with the corresponding data elements before the Fourier transform takes place. The index ix may assume values between 1 and SpectrumSize. By default, the weights are all set to 1.0, thus implementing a rectangle window function.

Hint: Please note that the coefficients of the weighting function have to be re-defined whenever the property SpectrumSize is changed.



Last Update: 2012-Oct-20