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第 42 卷 第 1 期                                                                       Vol. 42, No. 1
             2023 年 1 月                          Journal of Applied Acoustics                   January, 2023

             ⋄ 研究报告 ⋄



              两扬声器虚拟声重放的双耳声压控制与定位性能                                                                       ∗





                                             李枚锖 谢菠荪             †   刘路路


                                        (华南理工大学物理与光电学院         声学研究所    广州   510641)

                摘要：在两扬声器虚拟声重放中，通过精确重构双耳声压而产生不同的空间听觉感知。其重放的定位性能应
                该是由双耳声压控制的代价和稳定性所共同决定的。过去研究主要对双耳声压控制的稳定性进行分析，并以
                此作为扬声器布置和信号处理的依据。该文研究表明仅对双耳声压的稳定性分析是不足以完全衡量扬声器虚
                拟声重放的定位性能的。进一步采用虚拟声信号处理滤波器响应平均功率对双耳声压控制的代价进行分析。
                结果表明，缩窄左右对称扬声器布置的张角或采用非对称扬声器布置会明显增加产生侧向目标虚拟源时的双
                耳声压控制代价。虚拟源 (虚拟声像) 定位实验表明，双耳声压控制代价增加会引起虚拟源定位缺陷。实际应
                用中，为了有效产生侧向虚拟源，应避免采用过窄张角 (如立体声偶极) 和非对称的扬声器布置。
                关键词：虚拟声；定位；双耳声压控制
                中图法分类号: O428; O429          文献标识码: A          文章编号: 1000-310X(2023)01-0001-11
                DOI: 10.11684/j.issn.1000-310X.2023.01.001




               Binaural sound pressure control and localization performance in virtual sound

                                       reproduction using two loudspeakers


                                           LI Meiqiang XIE Bosun      LIU Lulu

                (Acoustic Lab, School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510641, China)

                 Abstract: In virtual sound reproduction via two loudspeakers, binaural pressures are controlled by two loud-
                 speakers to create various spatial auditory perceptions. Localization performance in reproduction is determined
                 by the stability and effort of binaural pressure control. Stability in binaural pressure control is analyzed in
                 previous studies to provide the basis for the design of loudspeaker configuration and signal processing. It is indi-
                 cated in present work that analysis on the stability only is not enough to evaluate the localization performance
                 in reproduction completely. The effort of binaural pressure control is further analyzed using the average power
                 of filters of virtual sound signal processing. Results indicate that symmetric loudspeaker configurations with
                 narrow span angle and asymmetric loudspeaker configuration increase the effort of binaural pressure control for
                 lateral virtual source. Virtual source localization experiment indicates that an increase of the effort of binaural
                 pressure control leads to localization defect. In practice, to recreate lateral virtual source in reproduction effec-
                 tively, symmetric loudspeaker configurations with narrow span angle (such as stereo dipole) and asymmetric
                 loudspeaker configuration should be avoided.
                 Keywords: Virtual sound; Localization; Binaural pressure control


             2021-11-30 收稿; 2022-03-07 定稿
             国家重点研发计划项目 (2018YFB1403800)
             ∗
             作者简介: 李枚锖 (1997– ), 女, 广西玉林人, 硕士研究生, 研究方向: 电声与信号处理。
             † 通信作者 E-mail: phbsxie@scut.edu.cn
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