Calm Counter
A classroom management tool to show noise level
Use your built-in microphone or plug in your USB microphone to enable this groovy noise level monitor.
Adjust the microphone sensitivity to suit your microphone and classroom, (i.e. tinker with the slider until you like the sensitivity).
Your browser will prompt you to ask if it is okay to connect to your microphone.
This page has an SSL certificate for security. No sound data is sent from your machine to any other.