For K-12 Students · Matched Filter
Matched Filter for a relay
Built for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework. Simulate a relay live below — adjust the inputs and watch it respond, right in your browser.
Matched FilterLive
pulling signal out of noise
Controls
Presets
A matched filter correlates a received signal with a known template, concentrating the pulse energy into a single sharp peak while averaging noise away. It gives the best possible detection in white noise — the core of radar, sonar, and GPS. Educational tool.
Data Inspector
Detected position0.56 × length
Detectionpulse found ✓
Governing equation
Reading this result: The pulse is buried, but correlation adds its energy coherently while random noise averages toward zero — the peak still clears the detection threshold.
Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.
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Frequently asked questions
- Is this good for k-12 students?
- Yes — this version of "Matched Filter for a relay" is framed for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework.
- Do I need to install anything?
- No. It runs in any modern browser, free, with no account required.