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mag:是什么意思db=20*log10((mag eps)?

编辑:sqxzgg 时间:2022-06-24 来源:人人爱宠物网

wp=2*pi*100;ws=2*pi*300;Rp=1;Rs=10;[n,wn]=buttord(wp,ws,Rp,Rs,'s')[b,a]=butter(n,wn,'s')%求模拟滤波器的频率响应[db,mag,pha,w]=freqs_m(b,a,500*2*pi);plot(w/(2*pi),db,'LineWidth',2,'Color','k');axis([0,500,-20,1]);hold on%脉冲响

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