Privacy Policy

Last updated: 6th Oct. 2026

Controller

The controller responsible for this website is named in the imprint.

Microphone audio

The mic test and the decibel meter ask for access to your microphone only after you press their start button. The audio is processed only in your browser, on your own device, to draw the level meter, waveform and decibel reading. It is never recorded to a server, never uploaded and never sent to us or to anyone else.

The optional "Record 5 seconds" feature keeps the recording only in your browser tab's memory so you can play it back. It is not saved to disk and is discarded when you record again, reload or close the page. The microphone is switched off when you press Stop, leave the page or switch to another tab.

The names of your audio devices are shown on the page so you can pick one. They are not stored or transmitted.

Settings

The decibel meter's calibration offset is stored in your browser's local storage on your own device, so it is still set next time. It is never sent to us. You can delete it by clearing this site's data in your browser settings.

Hosting

This site is hosted by Netlify, Inc., 101 2nd Street, San Francisco, CA 94105, USA. When you visit, Netlify processes technical data such as your IP address, browser type and the time of the request to deliver the site and keep it secure (legitimate interest, Art. 6(1)(f) GDPR). Data transfers to the USA are based on the EU-US Data Privacy Framework and standard contractual clauses.

Advertising (Google AdSense)

This site shows ads through Google AdSense, a service of Google Ireland Limited, Gordon House, Barrow Street, Dublin 4, Ireland. Google and its partners use cookies and similar technologies to serve ads, measure their performance and, with your consent, personalize them based on your visits to this and other websites. Ads have no access to your microphone.

Visitors from the EEA, the UK and Switzerland are asked for consent through a consent message before personalized ads or related cookies are used (Art. 6(1)(a) GDPR). You can change or withdraw your consent at any time through the privacy settings link shown on the site.

More information: How Google uses information from sites that use its services. You can opt out of personalized advertising at Google Ad Settings.

Your rights

You have the right to access, rectify, erase and restrict the processing of your personal data, to data portability, and to object to processing. You may also lodge a complaint with a data protection supervisory authority.