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For Students · Reverb Time (Sabine)

Reverb Time (Sabine) for a subwoofer

Built for students learning it for a class or exam. See the concept move instead of memorizing formulas — and check your homework intuition. Simulate a subwoofer live below — adjust the inputs and watch it respond, right in your browser.

Reverberation Time (Sabine)Live

how long sound lingers

Controls

Presets

Room volume (m³)

Surface area (m²)

Avg absorption α

Reverberation time — how long a sound takes to decay by 60 dB — is set by Sabine's formula RT60 = 0.161·V/(S·α). Big, hard rooms ring for seconds; small, soft rooms deaden almost instantly. Concert halls target around 2 seconds; recording studios far less. Adding absorption pulls the decay down.

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Data Inspector

RT600.98 s

Absorption A33 sabins

Charactergood (living room)

Governing equation

RT_{60} = \frac{0.161 V}{A} = \frac{0.161 \times 200}{33} = 0.98 s, A = i \sum α_{i} S_{i} = 33 sabins

Reading this result: RT60 of 0.98 s is a balanced living-room decay: speech stays clear with a touch of warmth.

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Frequently asked questions

Is this good for students?: Yes — this version of "Reverb Time (Sabine) for a subwoofer" is framed for students learning it for a class or exam. See the concept move instead of memorizing formulas — and check your homework intuition.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.