Bai Mingsian R, Tung Chih-Wei, Lee Chih-Chung
Department of Mechanical Engineering, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsin-Chu 300, Taiwan, Republic of China.
J Acoust Soc Am. 2005 May;117(5):2802-13. doi: 10.1121/1.1880852.
An optimal design technique of loudspeaker arrays for cross-talk cancellation with application in three-dimensional audio is presented. An array focusing scheme is presented on the basis of the inverse propagation that relates the transducers to a set of chosen control points. Tikhonov regularization is employed in designing the inverse cancellation filters. An extensive analysis is conducted to explore the cancellation performance and robustness issues. To best compromise the performance and robustness of the cross-talk cancellation system, optimal configurations are obtained with the aid of the Taguchi method and the genetic algorithm (GA). The proposed systems are further justified by physical as well as subjective experiments. The results reveal that large number of loudspeakers, closely spaced configuration, and optimal control point design all contribute to the robustness of cross-talk cancellation systems (CCS) against head misalignment.
提出了一种用于串扰消除的扬声器阵列优化设计技术，并将其应用于三维音频。基于将换能器与一组选定控制点相关联的反向传播，提出了一种阵列聚焦方案。在设计反向抵消滤波器时采用了蒂霍诺夫正则化。进行了广泛的分析以探讨抵消性能和鲁棒性问题。为了在串扰消除系统的性能和鲁棒性之间取得最佳折衷，借助田口方法和遗传算法（GA）获得了最佳配置。所提出的系统通过物理实验和主观实验得到了进一步验证。结果表明，大量扬声器、紧密间隔配置以及最佳控制点设计都有助于串扰消除系统（CCS）对头部位移的鲁棒性。
