电子相控阵列扬声器指向性调控初探  

Research on Directivity of Electronic Phased Array

作　　者：汪道澜 魏增来[1] 

机构地区：[1]中国传媒大学音乐与录音艺术学院,北京100024

出　　处：《演艺科技》2017年第12期29-35,共7页Entertainment Technology

摘　　要：从声柱的指向性基本原理入手,理论分析结合实验论证,初步探究电子相控阵列指向调控原理,通过DSP调节延时获得声波干涉,进行某频段的指向性控制,并根据当前的电子相控阵列产品现状,分析其不足,简单预测此类产品未来的发展趋势。Based on the fundamentals of sound column and through theoretical analysis and experimental demonstration,the paper analyzes how to gain directivity control of certain frequencies by adjusting the delay via DSP to produce interference of sound wave.The fundamental of electronic phased linearray is further studied. By reviewing the mainstream electronic phase control line array productson the market, this paper also gives the shortcomings and provides implications on future development of this kind of products.

关 键 词：声柱 指向性 数字信号处理 电子相控 半波长 

分 类 号：TN643[电子电信—电路与系统]