In this experiment we had to design a Digital Chebyshev Filter from Analog Chebyshev Filter BLT.
From the experiment I learnt that For a LP Digital Chebyshev Filter the ripples were present in the passband whereas the stopband was monotonic and vice versa for HP Digital Chebyshev Filter. Also in both the high pass and low pass filter, poles were present inside the unit circle , hence they are stable .For LPF there is definite zero at z=-1 while for HPF there is a definite zero at z=1.
The values of Ap and As as i/ps were approx. same .
link of the code : https://drive.google.com/drive/folders/0BwYB93kRygZnT1E1MUNaZXh4RGM
Poles are inside the unit circle thus filters are stable(HPF and LPF)
ReplyDeleteThis comment has been removed by the author.
ReplyDeletechebyshev filter is preferred .
DeleteFor same specifications, the order of Chebyshev filter is less than that of Butterworth filter, i.e. the number of poles is less in Chebyshev, thus less number of discrete components are required in Chebyshev filter, hence it is preferred
ReplyDelete