十多年前,笔者曾在一家歌舞厅做DJ。这家歌舞厅分下午场和晚场,每场都有演职人员表演。下午场的音响调控由笔者掌控,晚场的音响调控则由另外一名音控人员负责。 可是过了一段时间,乐手就感觉到下午和晚上的音响效果有很明显的差别。他们很纳闷地对我说:“怎么下午的音响效果好些,而晚上的音响效果要差一些?” More than a decade ago, I was a DJ in a dance halls. This song and dance hall divided afternoon games and evening games, each has a cast member performances. Audio control of the afternoon field by the author in charge of the evening sound control by another audio control staff. However, after a while, the musician felt that there was a clear difference between the afternoon and evening sound effects. They said to me very puzzled: "how the afternoon acoustics better, and the sound of the night to be worse?