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."
Pella Opera House Pella Opera House The Pella Opera House is a historic building located in Pella, Iowa, United States. Herman Rietveld, a local businessman and promoter, was the main backer for building the opera house, which was underwritten by the Pella Opera House Association. A previous opera house had been destroyed in a fire in the late 19th century. Pella architect Henry DeGooyer designed the four story, brick Romanesque Revival structure. He used the opera house in Sioux City, Iowa, as his guide. The locally produced orange-colored bricks are said to be distinctive to Pella. The opera house opened in November 1900