Getting difference in magnitude response of filter using freqz and fvtool by giving inputs as filter coefficients, b, a of iir filter
Afficher commentaires plus anciens
Getting difference in magnitude response of filter using freqz and fvtool by giving inputs as filter coefficients, b, a of iir.
Can you please tell the difference when both functions are used to get magnitude response.
Below is the design
fs= 50e3; %sampling freq
cutOff= 5;
order = 3;
t=0:1/fs:1-(1/fs);
Sig=sin(2*pi*200*t)+sin(2*pi*150*t);
noise=2*rand(size(t))+sin(2*pi*1*t)+sin(2*pi*5*t)+sin(2*pi*3*t)+sin(2*pi*7*t)+sin(2*pi*11*t)+sin(2*pi*0.5*t)+sin(2*pi*0.2*t);
noisySig = Sig+noise;
wn= 2*cutOff/fs;
[B, A] = butter(order,wn,'high');
freqz(B,A);
fvtool(B,A); %%Freq response of filter
filteredData=filtfilt(B,A,noisySig);
Réponses (0)
Catégories
En savoir plus sur Frequency Transformations dans Centre d'aide et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!