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双扬声器近场声源重放实验研究

本站小编 Free考研考试/2022-01-02
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魏彤,吴彦琴,桑晋秋,郑成诗,李晓东.双扬声器近场声源重放实验研究[J].,2020,39(2):189-198
双扬声器近场声源重放实验研究
Experimental study on near-field sound source reproduction using dual loudspeaker
投稿时间：2019-05-08修订日期：2020-02-26
中文摘要:
扬声器系统一直着重研究重放声源的方向感和环绕感，而基本忽略了重放声源的距离感。本文通过串声消除原理推导出双扬声器系统配置下重放近场声源的预滤波器，并提出采用不同距离的近场头相关传递函数调整预滤波器系数，从而实现近场不同距离下声源的重放。在多种典型双扬声器配置下，展开等距离近场声源方向辨别研究和同方向近场声源距离辨别研究。实验结果表明，首先近场声源重放存在前后混淆现象；其次当虚拟声源与扬声器同前方或同后方时，方向辨别结果较准确；最后在方向角判断准确的区域，受试者能够较准确地分辨声源的不同距离，同时声源越偏离中垂面，距离判定结果越准确。
英文摘要:
The loudspeaker system mainly concentrates on the direction and envelopment of the reproduced sound source while neglects the distance perception of the sound source. In this paper, a pre-filter is derived by crosstalk cancellation to realize near-field sound source reproduction through a dual-loudspeaker configuration. The pre-filter coefficients varies wtih the near-field head related transfer function（HRTF）at different distances to reproduce near-field sound sources. In several typical dual-loudspeaker configurations, the direction and distance of the reproduced sound sources were evaluated by a listening test. The listening test showed that back-front confusion exists in such near-field sound reproduction configurations. When the virtual sound source and the loudspeaker locate in the same direction, the direction judgement is comparatively accurate. In the area where the direction angle is accurately judged, the subject can differenciate the distances of the sound source, and the more the sound source deviates from the median plane, the more accurately the distance perception is acquired.
DOI：10.11684/j.issn.1000-310X.2020.02.003
中文关键词: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
英文关键词:Near-field sound source reproduction, Dual-loudspeaker system, Near-field Head related transfer function, Cross-talk cancellation
基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目）
作者单位E-mail
魏彤中国科学院声学研究所995410364@qq.com
吴彦琴中国科学院声学研究所wuyanqin@mail.ioa.ac.cn
桑晋秋中国科学院声学研究所sangjinqiu@mail.ioa.ac.cn
郑成诗中国科学院声学研究所cszheng@mail.ioa.ac.cn
李晓东中国科学院声学研究所lxd@mail.ioa.ac.cn
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