We designed a digital chebyshev filter using the analog filter and input specifications. Scilab software was used to write the code and also observe the output magnitude spectrum with frequency (Hz) on X axis and attenuation (dB) on Y axis.We have designed Chebyshev-I in which there are ripples in the pass band and no ripples in the stop band.It was observed similar input parameters the order of chebyshev filter was lesser compared to butterworth filter.
There are two types of Chebyshev filters, Chebyshev I and Chebyshev II
ReplyDeleteSo for the same desired response, implementing Chebyshev will be easier
ReplyDeleteSimilarly Chebyshev - II has ripples in stopband and monotonic in passband
ReplyDeletechebyshev contains ripples in mag plot
ReplyDeletechebyshev 1 contains ripple in passband and 2 conmtains ripples in stopband
ReplyDeleteThere are 2 types of chebshev filter
ReplyDeleteChebshev 1 has ripples in passband
ReplyDeleteChebshev 2 has ripples in stopband
DeleteThis type of filter is named after Pafnuty Chebyshev because its mathematical characteristics are derived from Chebyshev polynomials
ReplyDelete