数字化阵列通道均衡和波束形成算法  

A Study of Channel Equalization and Beamforming Algorithm in Digital Array

作　　者：马登永[1,2] 蔡野锋[2] 沐永生[2] 杨军[2] 周建明[1] 柴国强[1] 

机构地区：[1]苏州上声电子有限公司,江苏苏州215133 [2]中国科学院声学研究所通信声学实验室,北京100190

出　　处：《电声技术》2012年第11期42-45,56,共5页Audio Engineering

摘　　要：数字化阵列所采用的失配整形方法,仅能校正少量的通道偏差,并且对相位偏差的校正能力非常弱;另外,数字化阵列所采用的通道延时方法,仅适用于自由场内的单波束导向控制。针对传统的通道校正和波束导向方法所存在的缺陷和不足,提出了一种基于数据抽取选择的数字化阵列通道均衡和波束形成方法,有效解决了通道之间较大频响偏差的校正,并且能够解决复杂混响环境下的阵列多波束的导向控制。经仿真实验,证实了所提出均衡和波束形成算法的有效性。The dynamic element matching algorithm in the digital loudspeaker array can only correct small channel devia- tion and is sensitive to phase errors. Also, the delay beamforming method is only effective in the free field. In order to avoid these flaws, a new channel equalization and beamforming method based on data extraction is proposed. It can correct large frequency responses deviation between the channels and solve the problem of beamforming in the complex reverberant envi- ronment. It is verified by the simulation experiments.

关 键 词：多比特∑-Δ调制 数字化阵列 通道均衡 波束形成 

分 类 号：TN643[电子电信—电路与系统]