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过去人们一向认为两只音箱和听众三者的相距位置,应该刚好是一个等边三角形的三个顶点。然而,经过多年的实践证明,在许多场合下常感到这种放置法使音箱发出的声音有“缺陷”,立体声放音出现了“跳变”,两只音箱的距离A和箱的基线到听众的距离B是不相等的,当选择“听角”α约等于52°时,在吸声性能良好的房间里可以获得相当满意的立体声效果。进一步的研究还表明:在一般普通的住房条件下,听角还应小一些,约为40°左右。此时播放试音唱片,人们仿佛听到了真正的立体声播音。但是在实际中直接测量“听角”
In the past, people always thought that the distance between the two speakers and the audience should just happen to be the three vertices of an equilateral triangle. However, after many years of practice, it has been found on many occasions that this method of placement often causes “defects” in the sound of the speakers, “jumps” in the stereo playback, distance A between the two speakers and the baseline of the box to the listener Of the distance B is not equal, when the choice of “listening angle” α is about equal to 52 °, in a sound-absorbing good room can be quite satisfied with the stereo effect. Further research also shows that under normal conditions of housing, the listening angle should be smaller, about 40 °. At this point playing auditions, people seem to hear the real stereo broadcast. However, in actual measurement of “listening corner”