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Çë´ó¼Ò°ïæָµãÏ£¬Ð»Ð»ÁË£¡fs=1/60;%²ÉÑùƵÂÊΪ1000Hz
N=600;
n=0:N-1;
t=n/fs;
x=bz;
figure(1);
plot(t,x);title('origenal');
grid;
y=fft(x,N);%¸µÀïÒ¶±ä»»
mag=abs(y);
f=(0:length(y)-1)'*fs/length(y);
figure(2);
plot(f(1:N/2),mag(1:N/2)*2/N);%»æÖÆÆµÆ×ͼ
title('with noise');
grid;

[ Last edited by aqce on 2014-3-11 at 15:19 ]
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  • 2014-03-11 14:54:50, 212.86 K
  • ¸½¼þ 2 : test20011024.mat
  • 2014-03-11 15:11:36, 166.36 K

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