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考虑双耳根位差的高级近似，得到了具有更普遍意义的、重发通路间存在相位差时的立体声声像定位公式．在极低频或通路间相位差较小的情况下，它将简化为Makita理论的结果.但一般情况下声像位置将明显与频率有关．着重指出，在通路间存在相位差的立体声重发中，声像位置随频率而变化是导致声像展宽的主要原因．同时通路间相位差引起的附加低频对耳声级差是导致声像自然度降低的重要原因.在实际应用中，应尽量减少通路间的相位差，至少应减少到60°以下.
Considering the high-level approximation of the root-difference of binaural, a stereo image localization formula with more general significance and phase difference between retransmission paths is obtained. At very low frequencies or with small phase differences between paths, it will be reduced to the result of Makita’s theory, but in general the position of the sound image will obviously be frequency-dependent. Emphatically pointed out that there is a phase difference between the channels in the stereo retransmission, the location of the sound image with the frequency change is the main reason leading to the expansion of the sound image. At the same time, the additional low-frequency otoacoustic level difference caused by the phase difference between the channels is an important reason for the decrease of the naturalness of the sound image.In practical applications, the phase difference between the channels should be minimized, at least to be less than 60 °.