RoomTone

Classroom noise monitor

Choose a scene, set the voice target, and give your class a clear visual cue.

Live ReactionDon’t wake MisoSleepy cat
Live reactionChoose a world and start
Open-ended classroom modeMiso follows the room with no timer or finish line.
Live reactionPress Start to listenOFFMIC
Current gameSleepy catLive Reaction
Voice target
How this mode worksNo timer. No finish line.

Reacts instantly to classroom noise and recovers one step at a time.

Audio stays on this device. Nothing is recorded.

Seven classroom worlds

Choose a game

Pick an open-ended reaction or a calm-time challenge. Every game uses the same voice targets and keeps audio on this device.

Live reactions

Open-ended scenes that follow the room with no timer or finish line.

Goal challenges

Calm time moves the class toward milestones and a shared finish.

Set the finish time

How long should the class stay calm?

Choose the calm time needed to reach the finish. Working voices move more slowly, and loud sound pauses the challenge.

Use a whole number from 1 to 180, such as 45.

Sleepy cat5 min to finish

Tune this room

Teacher settings

Device-relative readingThis is not calibrated dB SPL. Set the target while the room sounds right.

New here? See the quick setup.Use Fullscreen when you are ready to put it on the board.

A little preparation. A calmer lesson.

Start with a voice level the class understands. Adjust for your room, then let the scene do the reminding.

First time? Set up in three steps
  1. Choose the activity. Silent work, partner talk, or group work sets a starting voice target.
  2. Press Start and allow the microphone. Adjust Teacher settings while the room sounds right. Audio stays on your device.
  3. Open Fullscreen. Show the class the scene and agree what Quiet, Working, and Too loud mean.
Teacher guide

Your first week with RoomTone

Introduce the monitor gradually, so it becomes a classroom routine.

Set a partner-talk voiceA target students can practice.Set up the classroom displayFullscreen, contrast, and where to place your laptop.
All teacher guides

Good to know

Free to use. No account needed.

How we handle microphone data
Is this classroom noise monitor free?

Yes. All seven noise games, activity presets, teacher settings, and fullscreen mode are free and require no account.

Does RoomTone record students or classroom conversations?

No. Your browser reads moment-to-moment microphone volume locally. RoomTone does not create recordings, recognize speech, upload audio, or store microphone samples.

How do the classroom noise games work?

Sleepy Cat and Lantern Glow are open-ended Live Reactions. Paper Flight, Star Watch, Quiet Garden, Mural Maker, and Marble Mission are Goal Challenges that build progress during quiet and working sound.

Is the number a real decibel reading?

It is a device-relative classroom level based on the microphone signal, not calibrated sound pressure level (dB SPL). Tune the preset and thresholds for the device and room.

Can I show it on a projector or classroom display?

Yes. Every game has a fullscreen mode with large characters, words, and shapes. Goal Challenges also show progress marks that remain readable across a classroom.

What happens when the classroom gets too loud?

Miso becomes alert and settles gradually after the room quiets. Goal Challenges slow at working volume and pause when the room is too loud. A local chime is optional and off by default.