扬声器纯音检测系统的设计  

A Design of Loudspeaker Pure-tone Detection System

作　　者：钱江山 孟凯 

机构地区：[1]常州出入境检验检疫局,江苏常州213100

出　　处：《电声技术》2009年第5期23-28,共6页Audio Engineering

摘　　要：介绍了采用数字频率合成技术,利用S3C44B0X控制AD9854芯片构成数字式扫频模块的方法,设计了基于INV9206的扬声器信号检测系统,讨论了采用短时傅里叶变换技术辨别区分扬声器纯音故障的方法,给出了利用DSP芯片TMS320VC5416实现该方法的硬件设计方案,最后讨论了系统基于嵌入式操作系统armLinux构建软件体系的思路。The method of constituting a digital frequency sweep module by using digital frequency synthesis technology is introduced, and the S3C44BOX is employed to control AD9854 chip. The speaker signal detection system based on INV9206 is designed, and then the use of short-time Fourier transform technique to identify the pure-tone fault is introduced. The hardware design for the realization of the method using DSP chip TMS320VC5416 is given. The ideas to build a software system of this system based on embedded operating system armLinux is discussed.

关 键 词：S3C44B0X AD9854 TMS320VC5416 短时傅里叶变换 嵌入式LINUX 

分 类 号：TN643[电子电信—电路与系统]