This is an introduction to digital signal processing. Here, we begin with an background introduction with geometric series and its application to finding the Fourier Transform for discrete-time signals. Note when we talk about discrete-time signals the example given in the video is for aperiodic signals. Signals that are continuous or discrete in the time-domain have a Fourier Representation that is continuous in the frequency-domain.

More videos will be upcoming as to explain the Fourier Representation.

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