不同距离定位谱特征的研究  

Study on the Localization Spectral Characteristics at Different Distances

作　　者：钟小丽 赖焯威 宋昊 杨小飞 ZHONG Xiaoli;LAI Zhuowei;SONG Hao;YANG Xiaofei(School of Physics and Optoeletronics, South China University of Technology, Guangzhou 510640, Guangdong, China;School of Management, Guangdong University of Technology, Guangzhou 510520 , Guangdong, China)

机构地区：[1]华南理工大学物理与光电学院,广东广州510640 [2]广东工业大学管理学院,广东广州510520

出　　处：《华南理工大学学报（自然科学版）》2021年第4期59-64,共6页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省自然科学基金资助项目(2021A151501187)。

摘　　要：采用谱偏离算法和相关算法,研究了不同声源距离情况下定位谱特征的空间分布,得到了不同声源距离的最匹配角度,并采用主观定位实验对最匹配角度的听觉效果进行了验证。计算结果表明,随着声源距离的变化定位谱特征出现空间畸变,其畸变程度随着声源距离的减小以及声源偏离侧向方位而逐渐增大。进一步的听音实验发现,这种定位谱特征的空间畸变将导致可感知的声像畸变,特别是在前后方位;同时,从定位混乱率和定位精度上来看,谱偏离算法比相关算法更适合用于不同距离的最匹配角度的挑选。The spatial distribution of the localization spectral characteristics at various distances was studied by using the spectral deviation algorithm and the correlation algorithm.The best-match angles at different distances were obtained,and a subjective localization experiment was further carried out to validate the audio effects.Calculation results show that,the spatial distortion of the localization spectral characteristics occurs at different distances,in which the distortion degree increases for decreasing distance and large deviation angle relative to the lateral direction.The further localization experiment shows that the calculated spatial distortions of the localization spectral characteristics lead to audible distortion of sound images,especially at the front and back directions.Meanwhile,compared to the correlation algorithm,the spectral deviation algorithm is more suitable in selecting the best-match angles for different distances in view of localization confusion rate as well as localization accuracy.

关 键 词：双耳听觉 声源定位 头相关传输函数 空间畸变 

分 类 号：O422[理学—声学]