sounddampener
nounUK /ˈsaʊndˌdæmpənə/
US /ˈsaʊndˌdæmpənər/
A sound dampener is a thing that makes loud noises quieter.
We put a sound dampener on the wall so the music would not bother the neighbors.
OTHER MEANINGS
2. A material or device used in vehicles to reduce engine or road noise.
The car's sound dampener kept the cabin quiet on the highway.
3. A person or thing that softens the impact or intensity of something.
Her calm voice acted as a sound dampener during the argument.
4. A pad placed under machines to lessen vibration and noise.
The washing machine sits on a rubber sound dampener.