how to filter a signal using firlpnorm???
2 次查看(过去 30 天)
显示 更早的评论
Sivakumaran Chandrasekaran
2013-11-30
评论: Sivakumaran Chandrasekaran
2013-11-30
'y' is the input white noise and 'g' is the sine wave... h=y+g... how to filter 'h' using firlpnorm??
0 个评论
采纳的回答
Wayne King
2013-11-30
编辑:Wayne King
2013-11-30
Have you read the documentation for firlpnorm()? firlpnorm() seems like a sophisticated filter design for just a sine wave in additive noise, but here is an example.
Fs = 1000;
t = 0:1/Fs:1;
% 50-Hz sine wave in noise
x = cos(2*pi*50*t)+randn(size(t));
% lowpass filter
B = firlpnorm(22,[0 .15 .4 .5 1],[0 .4 .5 1],[1 1 0 0 0]);
% Filter magnitude response
fvtool(B,1)
% Filter the data
y = filter(B,1,x);
更多回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Analog Filters 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!