What is "soundproofed"

Usage examples of "soundproofed".

It was a small, very neat room, soundproofed, fitted up like a ship's cabin with a built-in bunk, hi-fi speakers that piped in the music, a small self-contained hot plate and refrigerator.

The suites are soundproofed, but Archer’s bed is right on the opposite side of the wall from our bed.

Undoubtedly the walls were well soundproofed, but surely the man had screamed long and loud before he died.

The building's old, you see, so the walls and doors aren't really thick or soundproofed well.

Here, she thought, in this quiet, wealthy arena, where the houses were soundproofed and protected from prying eyes, murder would be a private business.