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On the optimization of a mixed speaker array in an enclosed space using the virtual-speaker weighting method

机译：使用虚拟扬声器加权方法优化封闭空间中的混合扬声器阵列

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摘要

In order to achieve sound field reproduction in a wide frequency band, multiple-type speakers are used. The reproduction accuracy is not only affected by the signals sent to the speakers, but also depends on the position and the number of each type of speaker. The method of optimizing a mixed speaker array is investigated in this paper. A virtual-speaker weighting method is proposed to optimize both the position and the number of each type of speaker. In this method, a virtual-speaker model is proposed to quantify the increment of controllability of the speaker array when the speaker number increases. While optimizing a mixed speaker array, the gain of the virtual-speaker transfer function is used to determine the priority orders of the candidate speaker positions, which optimizes the position of each type of speaker. Then the relative gain of the virtual-speaker transfer function is used to determine whether the speakers are redundant, which optimizes the number of each type of speaker. Finally the virtual-speaker weighting method is verified by reproduction experiments of the interior sound field in a passenger car. The results validate that the optimum mixed speaker array can be obtained using the proposed method.
机译：为了在宽频带上实现声场再现，使用了多种类型的扬声器。再现精度不仅受发送到扬声器的信号的影响，而且还取决于每种扬声器的位置和数量。本文研究了一种优化混合扬声器阵列的方法。提出了一种虚拟扬声器加权方法，以优化每种扬声器的位置和数量。在该方法中，提出了虚拟扬声器模型来量化当扬声器数量增加时扬声器阵列的可控制性的增量。在优化混合扬声器阵列时，虚拟扬声器传递函数的增益用于确定候选扬声器位置的优先级顺序，从而优化每种类型扬声器的位置。然后，使用虚拟扬声器传递函数的相对增益来确定扬声器是否冗余，从而优化每种扬声器的数量。最后，通过对乘用车内部声场的再现实验验证了虚拟扬声器的加权方法。结果证明，使用所提出的方法可以获得最佳的混合扬声器阵列。

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  • 来源
    《Mechanical systems and signal processing》 |2018年第1期|214-229|共16页
  • 作者

    Bo Peng; Sifa Zheng; Xiangning Liao; Xiaomin Lian;

  • 作者单位

    Department of Automotive Engineering, State Key Laboratory of Automobile Safety and Energy, Tsinghua University, Beijing, China,Changan Auto Global R&D Center, Changan Automobile Co., Ltd., Chongqing, China;

    Department of Automotive Engineering, State Key Laboratory of Automobile Safety and Energy, Tsinghua University, Beijing, China;

    Department of Automotive Engineering, State Key Laboratory of Automobile Safety and Energy, Tsinghua University, Beijing, China,Changan Auto Global R&D Center, Changan Automobile Co., Ltd., Chongqing, China;

    Department of Automotive Engineering, State Key Laboratory of Automobile Safety and Energy, Tsinghua University, Beijing, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Enclosed space; Sound field reproduction; Multiple-type speakers; Array optimization; Virtual speaker;

    机译：密闭空间;声场再现;多种类型的扬声器;数组优化;虚拟扬声器;

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