Noise Meter

Set the maximum classroom noise level. When the sound stays above the threshold, the warning plays and the counter advances.

Controls

Displayed levels are an estimate. Computer microphones are not calibrated sound-level meters.
The sound must remain too loud for this many seconds before it is counted.
Prevents one continuous noise from increasing the counter repeatedly.
Noise Events 0
Microphone access usually requires HTTPS or localhost. Allow microphone permission when prompted.
-- Estimated dB
30 50 70 90 110 120
Microphone is stopped.