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For Researchers · Sampling & Nyquist

Sampling & Nyquist for a transmission line

Built for researchers prototyping or validating an idea. Prototype fast, reproduce exactly, and share a citable, interactive version of your model. Simulate a transmission line live below — adjust the inputs and watch it respond, right in your browser.

Sampling & NyquistLive

when digital gets it wrong

Controls

Presets

Signal frequency (Hz)

Sample rate fs (Hz)

The Nyquist–Shannon theorem says you must sample faster than twice the highest frequency. Sample too slowly and a high frequency masquerades as a low one — aliasing — which is why anti-alias filters guard every ADC. Educational tool.

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Data Inspector

Nyquist rate10 Hz

Samplingtoo slow ⚠

Apparent frequency3.0 Hz

Governing equation

f_{s} > 2 f_{m a x} : 8 Hz < 10 Hz \Rightarrow f_{alias} = 3.0 Hz

Reading this result: Undersampled: fs=8 Hz is below the 10 Hz Nyquist rate, so the 5 Hz tone masquerades as a false 3.0 Hz signal.

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Frequently asked questions

Is this good for researchers?: Yes — this version of "Sampling & Nyquist for a transmission line" is framed for researchers prototyping or validating an idea. Prototype fast, reproduce exactly, and share a citable, interactive version of your model.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.