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THE FEUTEX TOOLKIT

Static Compressor Transfer

Calculate steady-state output above a hard-knee compressor threshold.

Audio workspace● Runs in your browser
01 Your input
02 Your result
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FormulaOutput level = (input>threshold?threshold+(input-threshold)/ratio:input)+makeup; Gain reduction = input>threshold?(input-threshold)*(1-1/ratio):0
Sources and model references

Worked example

Inputs

Input level
-6 dBFS
Threshold
-18 dBFS
Compression ratio
4
Makeup gain
3 dB

Expected results

Output level
-12 dBFS
Gain reduction
9 dB

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

How to use this tool

  1. Calculate steady-state output above a hard-knee compressor threshold.
  2. Set input level, threshold, compression ratio, makeup gain in the indicated units.
  3. Calculate and compare output level, gain reduction.

Try this example

{
  "input": -6,
  "threshold": -18,
  "ratio": 4,
  "makeup": 3
}

Accuracy and scope

Static hard-knee transfer only. Attack, release, detector behavior and clipping are not simulated.

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.