微型正四面体扬声器研制及性能测试  

Design and Characteristics Test for Micro Tetrahedral Loudspeaker

作　　者：陈幸幸[1] 曾向阳[1] 汪远东[1] 王曙光[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《电声技术》2009年第8期20-22,共3页Audio Engineering

基　　金：陕西省自然科学基金(2006A11);教育部新世纪优秀人才支持计划资助;西工大研究生创业种子基金资助

摘　　要：为了研究ILD和ITD对近场声源听觉距离感知的影响,研制了适用于近场HRTF测量的微型正四面体扬声器,根据GB/T9396—1996,在半消声室中测量了该扬声器的频率响应和空间指向性,并与正十二面体扬声器的频响曲线进行了比较。实验结果表明,微型正四面体扬声器在所需频带内的特性与点声源近似,因而可应用于近场HRTF的测量。A micro tetrahedral loudspeaker is made for HRTF measurement in the proximal region. The frequency response of the loudspeaker is measured in the semi-anechoic chamber according to GB/T 9396--1996 and compared with the characteristics of a micro dodecahedral loudspeaker. The direetivity of the micro tetrahedral loudspeaker is calculated and plotted with MATLAB. The experiment results have shown that the characteristics of the designed loudspeaker were similar to the features of a point source in the given frequency range and can be used for HRTF measurement in the proximal region.

关 键 词：微型正四面体扬声器 频率响应 指向性 近场 HRTF 

分 类 号：TN643[电子电信—电路与系统]