衣服、耳廓对肩部反射及头相关传输函数的综合影响

Overall influence of clothing and pinnae on shoulder reflection and HRTF

摘要: 通过对人工头/躯干系统和真人的头相关传输函数进行测量和分析,研究了衣服、耳廓对肩部反射及头相关传输函数的综合影响。实验结果表明,在3.0kHz以下肩部反射声几乎与衣服无关;而无耳廓时,不同的衣服对5.0kHz以上的肩部反射声以及头相关传输函数有一定的影响,但耳廓的存在会掩盖肩部反射的高频部分。因此,3.0kHz以下的肩部反射能够成为一个稳定的声源定位因素。

Abstract: The overall influence of clothing and pinnae on shoulder reflection and head-related transfer function(HRTF) is investigated using HRTFs obtained on KEMAR with torso and a human subject.Analyses reveal that shoulder reflection is irrelevant to clothing below 3.0 kHz,while without pinnae clothing has some influence on should reflection and HRTF above 5.0 kHz.However,at high frequencies pinnae can conceal the shoulder reflection so that the shoulder reflection below 3.0 kHz is available as a stable localization information.The pinnae can weaken,or even eliminate,the influence of clothing on the shoulder reflection and localization.This is another physiological function of pinnae.