This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Variations of the Fourier transform.tif math Dirac comb functions and the convolution theorem to model the effects of sampling and periodic summation At lower left is DTFT the spectral result of sampling at intervals of The spectral sequences at upper right and lower right are respectively computed from one cycle of the periodic