i want to filter a frequeny
2 ビュー (過去 30 日間)
古いコメントを表示
Hi all,
I write because I'm trying to do filtering in maltab.
in the code below I have a signal which is composed of two sinus of frequencies 0.3Hz and 2Hz.
I'd like to do is filter the sinus 2Hz the code below does not kidnapped this signal's component ...
you know where it comes from?
clear all;close all;clc;
%%original
t = 0:0.01:10;
y = sin(2*pi*0.3*t)+sin(2*pi*2*t);
%%filter
fs = 1000;
fcoupure = 2*[1 3]/fs;
[b]=fir1(1,fcoupure,'stop');
yfilter=filter(b,1,y);
figure (1);hold on;plot(t,y);plot(t,yfilter,'r');
%%butterworth
fs = 1000;
fcoupure = 2*[1 3]/fs;
[b,a]=butter(1,fcoupure,'stop');
yfilter=filter(b,a,y);
figure (2);hold on;plot(t,y);plot(t,yfilter,'r');
help me with any method not only butter
0 件のコメント
採用された回答
その他の回答 (0 件)
参考
カテゴリ
Help Center および File Exchange で Digital Filter Analysis についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!