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《Journal of Applied Acoustics》 2020-02
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Experimental study on near-field sound source reproduction using dual loudspeaker

WEI Tong;WU Yanqin;SANG Jinqiu;ZHENG Chengshi;LI Xiaodong;Institute of Acoustics, Chinese Academy of Sciences;University of Chinese Academy of Sciences;  
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.
【Fund】: 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)
【CateGory Index】: TN643
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