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 […]

Analog To Digital Conversion – Performance Criteria

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https://www.electronics-lab.com/article/analog-to-digital-conversion-performance-criteria/

Overview In this series of articles, we considered PCM (Pulse Code Modulation) as a method of digital representation of an analog signal. In the PCM method, the samples of the continuous wave are allowed to take only certain discrete values. These amplitudes are then assigned a code, where each code uniquely represents the magnitude of […]