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THE FEUTEX TOOLKIT

Sampled Tone Alias Folding

Fold a real sinusoidal input into the first Nyquist zone.

Signal Processing workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
Formulafalias=|fin−fs round(fin/fs)|
Sources and model references

How to use this tool

  1. Enter the labeled inputs in the indicated units.
  2. Calculate and compare every output against the stated model assumptions.

Try this example

{
  "f": 70000,
  "fs": 48000
}

Accuracy and scope

Single real tone, ideal uniform sampling; analog anti-alias filtering is not modeled. Simplified analytical model; not a design recommendation or safety certification.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.