?? ex12_4.m
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% Example 12.4
%
N = 2; % number of poles
T = .2; % sampling period
wc = 2; % analog cutoff frequency
Omegac = wc*T/pi; % normalized digital cutoff frequency
[numd,dend] = butter(N,Omegac)?? 快捷鍵說(shuō)明
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