Data Security

This page explains how Reverb-Calculator.com handles data when you use its tools. The answer is straightforward: the tools on this site calculate room reverberation time from numeric values you type — room dimensions and absorption coefficients. No audio is captured, no microphone is used, and no data of any kind leaves your device.

Why This Page Exists

Reverb-Calculator.com is an acoustics website. Users may reasonably wonder whether it uses their microphone to measure room acoustics directly. This page answers that question clearly: it does not.

What the Tools Do

Every tool on Reverb-Calculator.com works from typed or selected numeric inputs:

RT60 Calculator (Sabine) — you enter room volume (m³ or ft³), total surface area (m² or ft²), and average absorption coefficient. The tool applies the Sabine formula (RT60 = 0.161 × V/A in metric) in JavaScript and returns the reverberation time in seconds. The inputs and output exist only within your browser session.

RT60 Calculator (Eyring) — you enter room volume, total surface area, and mean absorption coefficient. The tool applies the Eyring formula in JavaScript and returns the result. Same local computation, no data transmission.

Any additional calculation tools on this site follow the same pattern: typed numeric input → local JavaScript computation → displayed result.

In every case, the computation is a local JavaScript operation. No input data is transmitted to any server. No results are stored. When you close the browser tab or navigate away, all session data is cleared.

What These Tools Do Not Do

Do not use a microphone — no audio measurement of any kind
Do not capture any audio — the tools work from typed numbers, not from sound
Do not use the Web Audio API — no audio processing of any kind
Do not accept file uploads — no audio files, room measurements files, or data files
Do not make network requests — no data is sent over the internet during tool use
Do not store your inputs — room dimensions and absorption values are not saved anywhere
Do not track your calculations — no session history is built or retained
Do not connect your activity to any identifier — your RT60 calculations are not linked to any cookie, analytics profile, or personal identifier

A Note on Microphone Measurement

A professional acoustic measurement of RT60 requires an impulse source (a starter pistol, balloon pop, or calibrated loudspeaker), a calibrated measurement microphone, and specialised software that analyses the recorded impulse response per ISO 3382. This website provides calculated estimates from the Sabine and Eyring formulas based on room geometry and material properties — it does not perform microphone-based measurement and does not use your device microphone at any point.

Contact Form Data

If you contact Reverb-Calculator.com through the Contact page, we receive your email address and the content of your message. Used only to respond to your inquiry. Not shared with any third party. Retained only as long as necessary to resolve the inquiry.

Analytics and Advertising

Reverb-Calculator.com does not use advertising networks or behavioural tracking systems. Basic analytics may be used to understand aggregate traffic patterns in an anonymised form. No personally identifiable information is collected or retained for this purpose. Full details are in the Privacy Policy.

HTTPS Security

All pages on Reverb-Calculator.com are served over HTTPS. Because the tools perform all calculations locally and transmit no data, HTTPS is not relevant to tool operation — but it protects all other information exchanged during your visit, including contact form submissions.

Reporting a Security Concern

If you discover a security issue or a data handling practice that does not match what is described on this page, report it via the Contact page. All reports are reviewed personally by Noah Bennett and responded to within 48 hours.