Opera house electronic libretto systems have begun to be used in some opera houses, including New York's Metropolitan Opera, Milan's La Scala, and the Crosby Theatre of The Santa Fe Opera, which provide two lines of text on individual screens attached to the backs of the seats so as to not interfere with the visual aspects of the performance. A subtle type of sound reinforcement called acoustic enhancement is used in some opera houses. Acoustic enhancement systems help give a more even sound in the hall and prevent "dead spots" in the audience seating area by "...augment[ing] a hall's intrinsic acoustic characteristics."
Waterville Opera House and City Hall Waterville Opera House and City Hall The Waterville Opera House and City Hall is a historic civic building at Castonguay Square (Common and Front Streets) in downtown Waterville, Maine. Built at the turn of the 20th century, it is one of a small number of multifunction civic buildings, housing both a live performance venue and municipal facilities, functions it continues to perform today. It was listed on the National Register of Historic Places in 1976. The Waterville Opera House and City Hall stands in downtown Waterville, at the northwest corner of Common and Front Streets. Its main facade faces south,