Signal crest factor calculator

Calculate peak-to-RMS ratio and crest factor with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use peak-to-RMS ratio and crest factor to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Samples
1,-1,2,-2
Remove DC mean: 0 no; 1 yes
0
Peak-to-RMS ratio
1.264911
Crest factor (dB)
2.0412

Try another scenario

Samples
[1, 0, 0, -1]
Remove DC mean: 0 no; 1 yes
0
Peak-to-RMS ratio
1.414214
Crest factor (dB)
3.0103
Calculation method

Calculation method

Peak-to-RMS ratio

Maximum absolute sample divided by RMS after optional mean removal.

Crest factor (dB)

20 log10(peak/RMS).

Symbols and units
a
Samples
b
Remove DC mean: 0 no; 1 yes

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Sample sequence, DC-removal convention. Returns Peak-to-RMS ratio. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Samples: minimum None, maximum 1000000000000.0. Remove DC mean: 0 no; 1 yes: minimum 0, maximum 1.
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These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.

Further reading

Method reference ↗

Background reading; this does not imply endorsement or independent review of SumFizz.

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