noisemonitor
nounUK /ˈnɔɪzˌmɒnɪtə/
US /ˈnɔɪzˌmɑːnɪtər/
A noisemonitor is a tool that listens to how loud a place is.
The teacher put a noisemonitor on the wall to see how loud the class got.
OTHER MEANINGS
2. A person whose job is to check and record noise levels in an area.
The noisemonitor walked around the factory with a handheld device.
3. A software program that tracks the sound levels of a room or device.
She installed a noisemonitor on her laptop to check the fan noise.
4. A device that warns you when sounds get too loud.
The baby's room has a noisemonitor that lights up when he cries.