Lecture

Reconstruction: Sampling Theorem and Stroboscopic Effect Explained

Description

This lecture revisits the stroboscopic effect and explains how inverting time affects sinusoidal waves, leading to the reconstruction of signals with negative frequencies. By exploring mathematical equations, the instructor demonstrates how undersampling can artificially reconstruct signals with negative frequencies, highlighting the importance of respecting the Nyquist-Shannon sampling theorem.

Instructor

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Official source

https://mediaspace.epfl.ch/media/0_mgaayj4f

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Ontological neighbourhood

Physics

Electromagnetism: Waves

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