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Transform


Unit:SDL_fourier
Class:TFastFourier
Declaration:procedure Transform;

The method Transform calculates the Fourier transform of the signal as stored in the array properties RealSpec and ImagSpec. Before transformation takes place the signal is weighted by a function specified by the property WeightingWindow. The result of the transformation replaces the original data in these properties.

Example: This method is used in the following example programs (see http://www.lohninger.com/examples.html for downloading the code): fft60hz, ftfilter



Last Update: 2012-Oct-20