muting

2. A soft pad or clamp placed on a musical instrument to make its sound softer.

He put a muting on his trumpet so the neighbors wouldn't complain.

3. The act of turning off your microphone or sound during an online call.

Her muting during the meeting kept the background noise out.

4. A change in a bird's feathers or coloring that makes it less bright.

The muting of the parrot's colors happens in winter.