基于Matlab和DSP数字滤波器的设计与实现

摘要

A method of designing a FIR filter is introduced based on digital signal processor. Firstly,Matlab toolbox FDATool is used to design a low-pass filter meeting the performance required, and extract the impulse response coefficients, and then used a circular buffer and dual-operand indirect addressing in the TMS320C5416 DSP chip to implement the filter in three different frequency sine wave signals. It is indicates that the experiment results can meet the expected performance.%介绍了一种基于DSP实现FIR滤波器的设计方法.首先利用Matlab工具箱FDATool设计符合性能指标的低通滤波器,并提取单位冲激响应系数.然后采用循环缓冲区和双操作数间接寻址方式在TMS320C5416 DSP芯片上实现三个不同频率正弦波信号的低通滤波.实验结果表明,该滤波器基本满足预期性能指标要求.