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THE FEUTEX TOOLKIT

Sabine Reverberation Estimate

Estimate decay time and the additional absorption needed to reach a target RT60.

Audio workspace● Runs in your browser
01 Your input
02 Your result
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FormulaEstimated RT60 = 0.161*volume/absorption; Additional equivalent absorption = max(0,0.161*volume/target-absorption)
Sources and model references

Worked example

Inputs

Room volume
100 m³
Equivalent absorption area
20 m² sabins
Target RT60
0.5 s

Expected results

Estimated RT60
0.805 s
Additional equivalent absorption
12.2 m² sabins

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

How to use this tool

  1. Estimate decay time and the additional absorption needed to reach a target RT60.
  2. Set room volume, equivalent absorption area, target rt60 in the indicated units.
  3. Calculate and compare estimated rt60, additional equivalent absorption.

Try this example

{
  "volume": 100,
  "absorption": 20,
  "target": 0.5
}

Accuracy and scope

Diffuse-field Sabine approximation with uniform weak absorption; not a substitute for acoustic measurement.

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.