Nyquist-Shannon Sampling Theorem
Version 1.0.0 · Updated 2026-07-30
CORE DEFINITION
To fully reconstruct a signal, the sampling frequency must be at least twice the highest frequency of the signal. Scaffolding role: Determine the minimum threshold for information capture. Remind us that in any "sampling" behavior (research, monitoring), insufficient sampling density can lead to information distortion or omission.
SCAFFOLDING EFFECT
Reduce cognitive load
Determine the minimum threshold for information capture. Remind us that in any "sampling" behavior (research, monitoring), insufficient sampling density can lead to information distortion or omission.
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The sampling theorem states that to reconstruct a continuous signal without distortion from discrete samples, the sampling frequency must be greater than twice the highest frequency of the signal (the Nyquist rate).
MINIMUM ACTION
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- zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E9%87%87%E6%A0%B7%E5%AE%9A%E7%90%86verified
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