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."
Chester City Hall and Opera House Chester City Hall and Opera House Chester City Hall and Opera House is a historic city hall and theatre located at Chester, Chester County, South Carolina. It was built in 1890-1891, and is a Romanesque Revival style brick building. The façade consists of three sections: a four-story tower, gabled three-story central section, and a less ornate section three-story section. The interior was renovated following a fire in 1929, which destroyed the original spire tower containing a four-faced clock. Since 1891, this building has housed the town's administrative offices. It was listed on the National Register of Historic Places in 1973.