他们开始在一些电影院取代现场管弦乐队，而且只需要一个人来演奏一个风琴。

They were starting to replace live orchestras in some movie theaters, and it only takes one person to play an organ.

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这项技术也可以被用于音乐厅，比如当管弦乐队演奏时，听众即便坐在涂有遮蔽材料的柱子后面，也可以不受影响的倾听现场演奏。

This technology could also allow an orchestra patron sitting behind a cloaked column to hear music as clearly as one in an unobstructed spot.

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