THE FEUTEX TOOLKIT

FFT Record and Bin Plan

Relate acquisition length to bin spacing, record duration and Nyquist limit.

Signal Processing workspace● Runs in your browser

01 Your input

Sample rateHzSample countsamples

02 Your result

View or copy raw result data

Result data

FormulaΔf=fs/N; T=N/fs

Sources and model references

https://www.dspguide.com/ch8/2.htm

Worked example

Inputs

Sample rate: 48000 Hz
Sample count: 4800 samples

Expected results

Bin spacing: 10 Hz
Record duration: 0.1 s
Nyquist frequency: 24000 Hz

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

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

Try this example

{
  "fs": 48000,
  "n": 4800
}

Accuracy and scope

Bin spacing is not the same as resolving power; window choice and signal-to-noise matter. 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.