Page 20 - 《应用声学》2020年第2期

第 39 卷 第 2 期 Vol. 39, No. 2
2020 年 3 月 Journal of Applied Acoustics March, 2020

⋄ 研究报告 ⋄

双扬声器近场声源重放实验研究 ∗

魏 彤 1,2 吴彦琴 1,2 桑晋秋 1,2† 郑成诗 1,2 李晓东 1,2

(1 中国科学院声学研究所 北京 100190)

(2 中国科学院大学 北京 100049)
摘要：扬声器空间声重放系统的研究一般集中在重放声源的方向感方面，在距离感方面研究较少。该文采用
不同距离的近场头相关传递函数调整预滤波器系数，实现近场不同距离下声源的重放，研究多种典型双扬声
器配置下，等距离近场声源方向辨别和同方向近场声源距离辨别。实验结果表明：近场声源重放存在前后混淆
现象，当虚拟声源与扬声器同前方或同后方时，方向辨别较准确；在方向角判断准确的区域，能够较准确地分
辨声源的不同距离；声源越偏离中垂面，距离判定结果越准确。该研究为多扬声器配置下虚拟声源的距离重放
性能提供了较全面的评估。
关键词：近场声源重放；双扬声器系统；近场头相关传递函数；串声消除
中图法分类号: O429 文献标识码: A 文章编号: 1000-310X(2020)02-0178-11
DOI: 10.11684/j.issn.1000-310X.2020.02.003

Experimental study on near-field sound source reproduction using

dual loudspeaker

WEI Tong 1,2 WU Yanqin 1,2 SANG Jinqiu 1,2 ZHENG Chengshi 1,2 LI Xiaodong 1,2

(1 Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China)
(2 University of Chinese Academy of Sciences, Beijing 100049, China)

Abstract: The researches of louderspeaker spatial sound reproduction system mainly concentrate on the
direction perception of the reproduced sound source while neglect the distance perception of the sound source.
The near-field head related transfer functions (HRTFs) at different distances are used to adjust the prefilter
coefficients, so as to reproduce near-field sound sources at different distances. The direction discrimination at
equal distances and the distance discrimination at the same direction of the near field source is studied under
several typical dual-loudspeaker configurations. The experimental results show that back-front confusion exists
in such near-field sound reproduction, and the direction judgement is relatively more accurate, when the virtual
sound source and the loudspeakers locate in the same front or back half-plane. In the area where the directions
are accurately judged, the subject can differentiate the distances of the sound sources accurately, and the more
the sound source deviates from the median plane, the more accurately the distance perception. This study
provides a more comprehensive evaluation of the distance reproduction performance of virtual sound sources
with multi-speaker configuration.
Keywords: Near-field sound source reproduction; Dual-loudspeaker system; Near-field head related transfer
function; Cross-talk cancellation

2019-05-08 收稿; 2019-09-11 定稿
国家自然科学基金项目 (11504404, 11604362, 61801468), 中国科学院声学研究所青年人才项目 (QNYC201720)
∗
作者简介: 魏彤 (1992– ), 男, 甘肃会宁人, 硕士研究生, 研究方向: 声信号处理。
† 通信作者 E-mail: sangjinqiu@mail.ioa.ac.cn