Shanon-Nyquist Theorem

The Shannon-Nyquist Theorem states that to accurately reconstruct a signal without loss of information, it must be sampled at a rate at least twice its highest frequency component. For example, if a signal contains frequencies up to 10 kHz, it should be sampled at a minimum of 20 kHz. Sampling too slowly causes aliasing, which distorts the original signal. This principle ensures digital systems can faithfully capture and recreate analog signals, enabling accurate digital communication, audio recording, and data transmission.