Because multipurpose halls are designed to accommodate a variety of activities, they may have challenging acoustics. Consequently, background noise builds up until it becomes intolerable due to echoes distorting newly audible signals. Speech becomes unintelligible, communication gets distorted, and the room need acoustical support. Altering the hall's volume and adding sound absorption to surfaces that reflect sound are two ways to improve the acoustics of a multipurpose hall. Another tactic to manage echo and sound characteristics in a hall is to use acoustic stretch fabric walls and wall panels. Additionally, acoustic ceiling tiles can help reduce excessive reflections and reverberations in rooms.