The Fourier Analysis – Discrete Fourier Transform (DFT)

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https://www.electronics-lab.com/article/the-fourier-analysis-discrete-fourier-transform-dft/

Introduction Essentially, signals are functions that can be classified into different categories. A signal can be either continuous or discrete, and it can be either periodic or non-periodic. In our ‘Analog to digital conversion’ series of articles, we have seen that it is always possible to apply a sample-and-hold circuit to an analog (continuous) signal […]

The Fourier Analysis – Fourier Transform

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https://www.electronics-lab.com/article/the-fourier-analysis-part-2/

Introduction In the first part of the “Fourier Analysis” article, we have focused on the properties and usages of the Fourier series. We have seen the power of Fourier series as a tool for both decomposing and constructing general periodic functions in terms of “pure” sines and cosines. The physical world, however, is full of […]