摘要
介绍了数字传声器的基本原理和结构及数字信号的编码方式。针对数字传声器测试中遇到的困难提出了一种解决方案,通过信号处理模块进行D/A转换后得到模拟信号给电声测试系统进行测试并显示各相关参数,使数字传声器试验生产和常规生产的测试更加方便。
The basic principles, structure of digital microphone, and the way of digital signal coding are introduced. A solution is provided to resolve the problem that occurs in digital microphone measurement. The analog signal which is DA transformed by signal process module is used by the electro-acoustic test system to do the measurement. The displays of relevant parameters make the measurement for pilot and conventional production more convenient.
出处
《电声技术》
2010年第7期73-75,86,共4页
Audio Engineering
关键词
数字传声器
∑-△变换
D/A转换
电声测试
digital microphone
∑-△ transform
D/A transform
electro-acoustic test
