matlab ,已有数据,如何滤波?答:Omip=Wp/pi;Omis=Ws/pi; %归一化技术要求 [N,Wn]=buttord(Omip,Omis,Rp,Rs); %确定滤波器的阶数 disp(['The order of Butterworth Filtering is ',num2str(N)]);[b,a]=butter(N,Wn); %确定Butterworth滤波器转移函数系数向量 [H,w]=freqz(b,a,512); %512点复频响应 ...
matlab butter函数答:butter函数的语法如下:[z,p,k]=butter(n,Wn)[z,p,k] = butter(n,Wn,'ftype')[b,a]=butter(n,Wn)[b,a]=butter(n,Wn,'ftype')[A,B,C,D]=butter(n,Wn)