In a balcony area, there was a soundproof room with a window and a few seats.

We had 32 soundproof rooms to practice our music in.

For the final question, the contestants were taken into a "soundproof room."

"Do him proud," she said, and went back to her soundproof room.

A software composer, on the other hand, is in a soundproof room.

However, this theory doesn't hold true in a soundproof room.

He pointed to an obviously soundproof room, which was full of equipment.

Sometimes, being a replacement can seem a little like trying to shout in a soundproof room: does the outside world ever hear?

He was alone with the robot and his thoughts in the soundproof room.

He was facing the glass door of the soundproof room.