基于Matlab和DSP数字滤波器的设计与实现

Digital Filter Design and Implementation Based on Matlab and DSP Chip

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。

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.