Soundproofing techniques are methods used to reduce or block sound from entering or leaving a space. Common techniques include adding acoustic panels to walls, using soundproof doors, and installing double-glazed windows. These materials absorb or reflect sound waves, minimizing noise pollution and enhancing privacy. Another effective technique is using mass-loaded vinyl or soundproofing insulation in walls and ceilings. These materials add density, which helps to dampen sound transmission. Additionally, sealing gaps around windows and doors with weatherstripping can prevent sound leaks, further improving the overall soundproofing of a room.