基于虚拟仪器的传声器指向性测量系统  

Design of Microphone Directivity Measurement System Based on Virtual Instrument

作　　者：刘顺娟 徐斌[1] 

机构地区：[1]AAC声学科技股份有限公司南京电声技术研发中心,江苏南京210009

出　　处：《电声技术》2009年第3期19-21,共3页Audio Engineering

摘　　要：提出了一种基于虚拟仪器的传声器指向性测量系统。系统由NI数据采集卡及LabVIEW图形化编程语言编写的软件程序组成,由步进电机带动传声器转动,能绘制出待测传声器的指向性极坐标图,同时显示测得的数据。与传统的测量系统相比,该系统降低了成本,节省了操作空间,同时具有操作简单、指向性图案及测量数据同步实时显示特性。A microphone directivity measurement system is presented. The system consists of an NI DAQ card and a software programmed by graphical programming language LabVIEW. The mechanical system is driven by a step motor. The software can draw a directivity chart of the microphone under test, and display the result on the user interface at the same time. Compared with traditional measurement system, the system is a low-cost and space-saving device, and the simple operation and synchronized real-time display of directivity chart and measurement data are the key characteristics.

关 键 词：虚拟仪器 传声器 指向性 测量 极坐标图 

分 类 号：TB52[理学—物理]