Listening-area-informed sound field reproduction based on circular harmonic expansion
Listening-area-informed sound field reproduction based on circular harmonic expansion
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DOI：
10.1109/icassp.2017.7952128
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发表时间：
2017-03
期刊：
影响因子：
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通讯作者：
Natsuki Ueno;Shoichi Koyama;H. Saruwatari
中科院分区：
文献类型：
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作者：
Natsuki Ueno;Shoichi Koyama;H. Saruwatari
提出了一种利用听觉区域先验信息的声场再现方法。大多数当前方法旨在在整个空间上或围绕收听者位置再现声场。我们制定了这个问题的目标函数作为期望最小化的空间平方误差的听区内的声压。最佳驱动信号通过圆谐展开得到。将该方法与模式匹配方法进行比较，发现该方法的优势在于可以根据收听区域的位置和范围获得最优的圆谐波加权矩阵。数值仿真结果表明，与现有的其他方法相比，该方法在高频听音区可以保持较高的再现精度。
A sound field reproduction method that exploits prior information on listening areas is proposed. Most current methods are aimed at reproducing the sound field over the entire space or around listener locations. We formulate the objective function for this problem as the expectation minimization of the spatial squared error of the sound pressure inside the listening areas. The optimal driving signals are obtained by circular harmonic expansion. Comparing the proposed method with the mode-matching method, the advantage of the proposed method appears in the optimal weighting matrix of the circular harmonics, which depends on the location and range of the listening area. Numerical simulations indicated that high reproduction accuracy compared with other current methods can be maintained in the listening areas at high frequencies by using the proposed method.