扬声器阵列·声柱与声梁  

Loudspeaker Array,Sound Column and Sound Girder

作　　者：沈勇[1] 

机构地区：[1]南京大学声学研究所,江苏南京210093

出　　处：《电声技术》2011年第1期28-31,共4页Audio Engineering

基　　金：国家自然科学基金项目(10774075)

摘　　要：介绍了扬声器阵列、扬声器线阵列、声柱的基本概念,以连续直线阵列为例,介绍其指向特性、波阵面传播特性、有效辐射率(ARF)概念及其估计方法,分析了点声源声柱和线声源声柱。提出了声梁的基本概念及一种利用二次剩余序列实现均匀声场的解决方案。The concept of loudspeaker array, loudspeaker line array and sound column are introduced. Some basic characteristics such as directivity and ARF are introduced, sound columns of point sound source and line sound source are analyzed. The concept of sound girder is presented, and solution to achieve uniform sound field using quadratic residue sequence is provided.

关 键 词：扬声器阵列 声柱 声粱 

分 类 号：TN643[电子电信—电路与系统]