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Lecture
Are you an EPFL student looking for a semester project?
Work with us on data science and visualisation projects, and deploy your project as an app on top of Graph Search.
This lecture delves into the concept of signal reconstruction, starting from the spectral representation of a signal in the frequency domain, the notion of bandwidth, and the ideal low-pass filter. The instructor explains the process of signal sampling, emphasizing the importance of the sampling frequency being greater than twice the maximum frequency present in the signal to avoid undesirable effects. The lecture then shifts focus to the reconstruction of the original signal from its samples, addressing the challenges posed by undersampling and the stroboscopic effect. The instructor explores the conditions required for accurate signal reconstruction and investigates the origins of the stroboscopic effect in detail.