In this experiment,we designed digital chebyshev low pass filter and high pass filter from analog filter using Bilinear transform method.
Input specifications were given as follows:
1) Passband attenuation
2) Stopband attenuation
3) Passband frequency
4) Stopband frequency
5) Sampling frequency
We noted down values of pass band attenuation and stop band attenuation from the graphs obtained in Scilab.We observed that magnitude spectrum exhibits ripple in pass band and monotonic in stop band. Chebyshev's filter requires less hardware components for realisation.
Ripples give the order of filter.
ReplyDeleteYes.It does.
DeleteChebyshev filter exhibits ripple in pass band and no ripple in pass band.
ReplyDeleteIt has lesser order so it is easy to implement
ReplyDeleteYes it is easier to implement
DeleteChebyshev requires lesser components than Butterworth
ReplyDeleteTransition period for Chebyshev filter is less than that of butterworth filter.
ReplyDeleteGives a sharper response than Butterworth
ReplyDeleteThe ripples in passband of Chebyshev-1 filters can prove as a disadvantage as it introduces differences in gain for the passband signal.
ReplyDelete