In this experiment we had to design a digital filter from analog filter and study the aliasing effect due to sampling in Impulse Invariant Method and the frequency warping effect in BLT method .
So after obtaining the results we learn that analog LPF poles lie on the LHS of the s- plane and digial LPF poles lie inside the unit circle . Hence both analog and digital butterworth LPF are stable .
Is IIM better or BLT?
ReplyDeleteBLT method is better.
DeleteWhich method is better?
ReplyDeleteAs it avoids alaising of poles, we see that BLT method is better than IIM
DeleteWell written conclusion
ReplyDeletethank you for going through it.
Deletegood content!
ReplyDeleteThank you
DeleteIim method can only be used for low pass filters due to aliasing.
ReplyDeleteYes and BLT method can be used instead
DeleteThis was well written
ReplyDelete