How to design a FIR Filter
11 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Ramesh Vukyam
am 1 Apr. 2012
Beantwortet: Tina
am 22 Dez. 2019
Hello, I am new to matlab. I want to design FIR,Butterworth and some RC filters in Matlab with GUIDE. Someone told me that I can design it using Signal Processing Toolbox. Is it possible to implement these filters without any toolboxes otherthan just matlab and GUIDE.
0 Kommentare
Akzeptierte Antwort
Wayne King
am 1 Apr. 2012
Yes, it is possible, but you will have to write a lot of code. The Signal Processing Toolbox (SPT) enables you to create these filters easily. Filter design code can be very complicated, so you will have to invest a lot of time to do it without SPT.
0 Kommentare
Weitere Antworten (1)
Tina
am 22 Dez. 2019
not sure about rc filter but FIR and butterworth filter can be designed by the help of built in function fir1,Filter.
b = fir1(48,wc);
freqz(b,1,512)
for butterworth you use butter(L).
n=%order of filter
fs=%sampling frequency
fc= %your corner frequency
wc=fc/(fs/2);%cuttoff freq of filter
b=fir1(n,wc,'low',butter(n+1);
[H,w] = freqz(b,1);
plot(w/pi,20*log(abs(H)))
title('butterfilter')
and you can design simple filter by
d=designfilt('lowpassfir','filterorder',n,'cutoffFrequency',fc,'samplerate',fs);
Filtered=filter(d,signal)%signal is the signal you wont to filter
0 Kommentare
Siehe auch
Kategorien
Mehr zu Filter Analysis finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!