Fourier series that map periodic continuous-time functions into sequences in the frequency domain;
continuous-time Fourier transforms that map continuous-time functions into continuous frequency domain functions;
discrete-time Fourier transforms (DTFT) that map time domain sequences into periodic continuous frequency domain functions;
discrete Fourier transforms (DFT) that map periodic sequences in the time domain to periodic sequences in the frequency domain.
KeywordsPeri Convolution Lution
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