Noise meter
See how loud the classroom is: a live level from the device microphone, with three zones and adjustable sensitivity.
- No account
- Works offline
Quiet
The audio is processed in this browser: nothing is recorded, saved or sent anywhere.
Before you start
- The browser will ask for microphone permission the first time.
- Audio is analysed live in the browser: nothing is recorded or sent.
- Aquesta eina funciona en directe al navegador: no genera cap PDF.
- No cal cap compte i no desa res entre visites.
In the classroom
Put the device where the class can see it and agree on the zone you want to keep. Adjust the sensitivity to your room: every microphone hears differently.
Questions
Do I need to allow microphone access?
Yes. The browser asks for permission the first time; the meter cannot work without it.
Is any audio recorded or sent?
No. The audio is analysed live in your browser and never leaves the device.
Why does another device show a different level?
Every microphone hears differently. Adjust the sensitivity slider until the zones fit your room.
Does it work on phones?
Yes, on any phone or laptop with a microphone and a modern browser.
Is this free?
Yes. These printable tools do not need an account or payment.
Are my names and texts uploaded?
No. Your input is processed in your browser, not sent to a server.
Can I use the tools on a phone?
Yes. Use the preview before downloading. A larger screen may make editing longer lists easier.
Will my work be saved if I close the page?
No, except the name lists you choose to save in the groups and certificates tools: those stay in this browser until you delete them. Everything else is lost on closing or reloading, so download the PDF or keep a copy of your text.