kimo4ever
Member level 2
hello, i wanna design a bandpass filter using butter function , (if anyone know another helpful function whose input is the filter order and the cut off freq. plz tell it to me ) but i have a question about :
1- how to chose the normalized value to put Wn, for example if my cut off freq are 50 and 1000 Hz so how to chose the normalized value since wn is from 0 to 1? ( or the matlab has a default value?) and what its meaning?
2- the ftype of a bandpass filter , what would be ? just write butter(N,wn,'bandpass')??..or something else coz in the help are : low and hight and band stop only
thnx
1- how to chose the normalized value to put Wn, for example if my cut off freq are 50 and 1000 Hz so how to chose the normalized value since wn is from 0 to 1? ( or the matlab has a default value?) and what its meaning?
2- the ftype of a bandpass filter , what would be ? just write butter(N,wn,'bandpass')??..or something else coz in the help are : low and hight and band stop only
thnx
