头相关传输函数相位特性及双耳时间差的意义

The Meaning of the Phase Character of HRTF and Interaural Time Difference

从头相关传输函数相位特性的角度,综述和讨论了双耳时间差的各种不同定义及它们的物理意义,指出对头相关传输函数相位特性的不同考虑对应不同的双耳时间差定义。以双耳时间差的一些实验数据和计算模型为例,讨论了几种双耳时间差的结果及它们的内在联系,并强调指出对双耳时间差进行比较时,只有计算方法和条件相同的情况下才有意义。

From the view of the phase character of HRTF（Head-Related Transfer Function）, some definitions and physical meanings of ITD（Interaural Time Difference） are reviewed. It is shown that the different consideration on the phase of HRTF results in the different definitions of lTD. From some measurements and calculating models, the results and relationship of different ITD definitions are discussed. Emphatically, it is under the same definition and conditions that the comparison of lTD is significative.