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What is Discrete Fourier Transform Explained about?

The document discusses the discrete Fourier transform (DFT) and how it relates to signal processing. It begins by explaining how correlation can help interpret the physical meaning of the DFT. Specifically, spot correlation measures the similarity between two functions or signals over a period of time. The DFT allows computing this correlation for discrete-time signals. This permits analyzing continuous-time signals with a digital signal processor by representing the signal as a sum of sinusoids using the F

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