Newly fallen snow acts as a sound-absorbing material, which minimizes sound over its surface.

By placing sound-absorbing materials on these surfaces, you can contain the sound in the room.

The cabin interior was covered with a sound-absorbing material.

Mufflers work in two ways: by reflecting sound waves back on each other so they cancel out and by using sound-absorbing materials.

Using blankets, panels, and sound-absorbing materials in various configurations, dishwashers can achieve sound damping levels down to 39 decibels or so.

That means they are packed with layers of high-density foam or other sound-absorbing material, which makes them heavier than normal headphones.

Adding sound-absorbing material has made this echo much less.

This configuration is often combined with the use of sound-absorbing material inside the trap.

Even the chamber's walls were constructed of sound-absorbing materials.

"You need sound-absorbing material," he said, "and that can take many forms."