基于单片机的高精度传声器测试仪  

High-Precision Microphone Testing Instrument Based on MCU

作　　者：赖东林[1] 冯杰[1] 罗晓松[1] 冯策[1] 

机构地区：[1]中国电子科技集团公司第三研究所,北京100015

出　　处：《电声技术》2010年第9期34-36,共3页Audio Engineering

摘　　要：介绍了一种基于MSP430F5438单片机的测量2个传声器相位差和灵敏度的测试仪,详细阐述了数字相关法测试相位差的测量原理,并给出了软硬件的具体实现方法。最后给出了实测结果,试验结果表明该测试仪在实际应用中是可行的,并具有测量精度高,抗干扰能力强等特点。An instrument to test phase difference and sensitivity of two microphones based on MSP430F5438 MCU are introduced. The measure principle of digital correlation method to test phase difference is discussed. And the implement method of the hardware and software are presented. The experimental results show that the testing instrument is reliable and feasible. It has high-precision of measurement and strong anti-interference ability features.

关 键 词：传声器 相关法 相位差测量 灵敏度测量 

分 类 号：TN641[电子电信—电路与系统]