人们用双耳可以判断声音来自何方,声源离自己有多远,这就是平时常说的“双耳效应”(Biaural effect)。由于声波抵达左、右耳的时间和声压随着人与声源的相对位置而有差别,从而产生时间差和声压差,使得人们对声源的方向、距离具有辨别能力。把两个扬声器左右对称布置,聆听者坐在两个扬声器连线中点的垂直线前方,三者之间呈等边三角形的关系。当两个扬声器发出的声音强度相等(声压差为零),而且不分先后(时间差为零)时,聆 People use their ears to determine where the sound comes from and how far the sound source is from itself. This is the usual Biaural effect. As the sound waves reach the left and right ear time and sound pressure with the relative position of people and sound sources are different, resulting in time difference and sound pressure, making people the direction of the sound source, the distance has the ability to discern. The two speakers arranged symmetrically left and right, the listener sitting in front of the vertical line of the midpoint of the two speaker connections, the relationship between the three was equilateral triangle. When the sound intensity of the two speakers are equal (sound pressure difference is zero), and without distinction (time difference is zero), to listen to