为了简化虚拟听觉重放中耳机均衡的信号处理，对耳机到耳道传输函数(HpTF)的最小相位近似特性进行了分析和验证．首先，采用封闭耳道法对 20 名受试者、3 款耳机的 HpTF 进行了重复测量;然后，采用相关性分析和心理声学实验分别从物理和听觉的角度研究了 HpTF 最小相位近似的合理性．分析结果表明，在 0 ～ 12 kHz 的频率范围，测量HpTF 和最小相位近似 HpTF 的平均相关系数达 0．95，因此从物理上可以认为 HpTF 的最小相位近似是合理的．心理声学实验结果进一步表明，在 0 ～12 kHz 的频段中，HpTF 的最小相位近似不会引起可感知的听觉变化．

In order to simplify the headphone equalization processing in headphone- presented virtual auditory re-plays,the minimum- phase approximation of headphone- to- ear canal transfer functions (HpTFs) was analyzed andevaluated.In the investigation,first,HpTFs for 20 human subjects and three types of headphones were repeatedlymeasured by using the blocked ear canal technique.Then,the reasonability of the minimum- phase approximation ofHpTFs was discussed through correlation analysis and psychoacoustic experiment.Analytical results indicate thatthe mean correlation coefficient between the measured and the minimum- phase- approximated HpTFs is 0.95 in thefrequency range from 0 to 12kHz,which validates the reasonability of the minimum- phase approximation of HpTFs.Moreover,the results of psychoacoustic experiment further demonstrate that there is no audible difference betweenthe measured and the minimum- phase- approximated HpTFs at the frequency below 12kHz.