Sabine Reverberation Time Calculator
Metric SabineT60=0.161V/Ausing independently established equivalent absorption area, diffuse field/low absorption approximation; not waveform decay measurement or universal room acoustics. Actual independently established compatible SI units/model context; conditional arithmetic, not code compliance, engineering design or safe operation approval.
Description
Sabine's metric relation estimates reverberation time from room volume and equivalent absorption area under an approximate diffuse-field model.
Sabine's metric relation estimates reverberation time from room volume and equivalent absorption area under an approximate diffuse-field model.1
This tool evaluates that relation without measuring a decay waveform or validating a room's assumptions.
When to use Sabine Reverberation Time Calculator
Use this tool to evaluate that relation without measuring a decay waveform or validating a room's assumptions.
How to use Sabine Reverberation Time Calculator and how it works
- Prepare actualRoomVolumeCubicMeters, actualEquivalentAbsorptionAreaSquareMeters, with the units, conventions and assumptions below.
- Enter the required fields and run Sabine Reverberation Time Calculator.
- Read result.value using the output definitions below.
- Correct any rejected inputs and rerun; interpret the result within the stated model and its assumptions.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualRoomVolumeCubicMeters | Actual Room Volume Cubic Meters. Use the units and matching context stated in the calculation below. | number | Required; strictly positive; finite; other constraints below |
| actualEquivalentAbsorptionAreaSquareMeters | Actual Equivalent Absorption Area Square Meters. Use the units and matching context stated in the calculation below. | number | Required; strictly positive; finite; other constraints below |
Supply positive room volume in cubic meters and positive equivalent absorption area in square meters. Return 0.161*volume/absorptionArea in seconds under the Sabine approximation. The tool does not estimate absorption from finishes or verify diffuse-field assumptions.
reverberationSeconds=0.161*volumeCubicMeters/absorptionAreaSquareMeters Apply the input ordering, units and branch conditions stated above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Object containing the calculated or selected fields below. | object |
| result.value | Sabine reverberation-time estimate in seconds. | number |
{
"input": {
"actualRoomVolumeCubicMeters": 10,
"actualEquivalentAbsorptionAreaSquareMeters": 1
},
"output": {
"result": {
"value": 1.61
}
}
}Limitations and assumptions
The calculation uses the supplied observations and model inputs. It does not collect measurements, select a reference population or coefficient, or establish that the model applies to the actual case. The stated branch conditions and output units remain part of the result.
All fields require explicit values. Unexpected fields, wrong types, nonfinite numbers and sparse arrays are rejected. Alignment, bounds and supported-token rules are explained above; extremely large inputs or nonfinite results can also fail. Input errors differ from successful false comparisons, unavailable-domain flags and empty match lists.
Alternative or Complementary methods
Use Transmission Loss Calculator for a complementary operation: Acoustic transmission loss compares incident and transmitted power on a matched basis.
Use Sound Power Level Calculator for a complementary operation: Sound power level uses a power reference and a ten-times-logarithm convention.
References
-
Sabine Reverberation Time Calculator — tool.io
Similar or alternative tools
- Transmission Loss Calculator
Acoustic transmission loss compares incident and transmitted power on a matched basis.
- Sound Power Level Calculator
Sound power level uses a power reference and a ten-times-logarithm convention.