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标题: DSP28 fir低通滤波器的设计源码 [打印本页]

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作者: kiygb    时间: 2021-9-28 13:45
标题: DSP28 fir低通滤波器的设计源码

#include"stdio.h"

#include"math.h"

#include"DSP28_Device.h"

#defineorder 26

#defineN  128         

#definepi 3.1415926

floatFIR_LPF[order] ={-1.52864422149721e-05,-0.000133359311426970,-0.000544636220343477,-0.00137835208978255,-0.00218948983490142,-0.00124340086554490,0.00478134865608317,0.0198838342801837,0.0464361812966399,0.0825102845162328,0.120763491355644,0.150360916315540,0.161536936687780,0.150360916315540,0.120763491355644,0.0825102845162328,0.0464361812966399,0.0198838342801837,0.00478134865608317,-0.00124340086554490,-0.00218948983490142,-0.00137835208978255,-0.000544636220343477,-0.000133359311426970,-1.52864422149721e-05};

floats;

inti,n;

floatinput[N],output[N];  

intfs=10000;   

intf1=600;   

intf2=1500;

#definefa 2*pi*f1/fs

#definefb 2*pi*f2/fs

void inputwave()

{

    for(n=0;n<N;n++ )

input[n]=sin(fa*n)+sin(fb*n);

}

voidmain()

{   int m=0,n=0;

    inputwave();           

for(n=0;n<N+order;n++)

{

  for(s=0,m=0;(m<order)&&(m<n);m++)

{

   s=FIR_LPF[m]*input[n-m]+s;

}

        output[n]=s;}

while(1);  

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作者: jspij1    时间: 2021-9-28 14:20
学习了  感谢分享

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作者: grand    时间: 2021-9-28 16:43
建议下次加个注释

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