The experiment was performed on Scilab with same procedure required to that of the Butterworth filter design.The difference in the code of Chebyshev is the formula for calculating the parameters of Analog filter.
Design of the digital filter remains the same either by Bilinear Transform Method or Impulse Invariant Method.Order of the chebyshev filter was found less than Butterworth filter which simplifies the hardware required for designing this filter.
From the magnitude spectrum it was observed that there are ripples in pass band and it is monotonic in stop band.The number of ripples represent the order of the filter.
Design of the digital filter remains the same either by Bilinear Transform Method or Impulse Invariant Method.Order of the chebyshev filter was found less than Butterworth filter which simplifies the hardware required for designing this filter.
From the magnitude spectrum it was observed that there are ripples in pass band and it is monotonic in stop band.The number of ripples represent the order of the filter.
well explained!
ReplyDeleteWell written
ReplyDeleteshort & precise
ReplyDeleteBLT method is more preferable to avoid aliasing at higher frequencies!
ReplyDeleteAlso IIM is lengthy procedure for designing....
DeleteAlso IIM is lengthy procedure for designing....
DeleteTrue that
DeleteWell explained
ReplyDeleteLesser order makes it easier to implement it on hardware.
ReplyDeleteNice point..thank you for adding
DeleteFor cheby 1: monotonic in SB
ReplyDeleteFor Chebyshev 1 there are ripples in pass band.Cgebyshev 2 is monotonic in pass band
Delete