Design and Orthonormality Analysis of Trijunctional Spherical Microphone Array

摘要：

Spherical microphone arrays have been widely studied for sound recording, beamforming, and sound-field analysis due to the advantage of its spherical symmetry. A trijunctional sampling scheme for spherical microphone array is proposed in this paper. All its samples are on the junctions of three great circles which are respectively chosen from three different series with mutually orthogonal rotation axes. So the trijunctional sampling scheme holds a rotational symmetry with respect to each rotation axis, which makes it easy to obtain the coordinates and the weights of samples. Besides, an analysis of spherical harmonics orthonormality indicates that the array redundancy of trijunctional sampling scheme is much lower than that of equiangular and Gaussian sampling schemes.

关键词： trijunctional spherical microphone array rotational symmetry spherical harmonics orthonormality

作者: Qilei Zhuang Qinghua Huang

作者单位: School of Communication and Information Engineering Shanghai University, Shanghai, 20007, P.R.China

会议类型: 国际会议

会议名称: 2010 IEEE 10th International Conference on Signal Processing(第十届信号处理国际会议 ICSP 2010)

会议地点: 北京

会议语种:英文

页码: 348-351

在线出版日期: 2010-08-24（万方平台首次上网日期，不代表论文的发表时间）