基于MATLAB的定点DSP小波变换程序设计方法  

Methods for Fixed-Point DSP Wavelet Transform Based on MATLAB

作　　者：陈大科[1] 韩九强[1] 

机构地区：[1]西安交通大学电子与信息工程学院,西安710049

出　　处：《数据采集与处理》2006年第B12期86-89,共4页Journal of Data Acquisition and Processing

摘　　要：在Matlab/Simulink环境下,用图形方式设计数字信号处理器(Digital signal processors,DSP)的程序,以及采用多比率滤波函数(Multirate filters)实现DWT及IDWT的Mallat算法,简化了DSP的小波变换程序设计。文中给出了设计实例,用Matlab作辅助工具,设计db2小波变换,并对DSP的A/D转换结果进行滤波处理,再将设计的文件转换成C语言程序,经修改编译后在DSP目标板上运行。设计的程序在TMS320LF2407A处理器上运行正确,实现了小波滤波功能。The program of the digital signal processor （DSP） is designed using a graph method in the Matlab/Simulink environment. And DWT and IDWT of the Mallat algorithm are realized by multi-rate filters, thus simplifying the DSP wavelet transform programming. Implementation examples of the db2 wavelet transform are presented and the A/D results of DSP are denoised, using Matlab as the design tool. Then the MDL-file is translated into C program and run on the DSP board after modification. Testing results show that the designed program can realize wavelet denoising in TMS320LF2407A processor.

关 键 词：小波变换 数字信号处理器 MATLAB 阈值消噪 

分 类 号：TN911.7[电子电信—通信与信息系统]