The design of digital butterworth filter was done on an open source tool - Scilab. Its functions are same as that of MATLAB. The transfer function of the
filter was calculated in the Laplace (s) domain and then converted to
the z domain by using the Bilinear Transform Method. Both low pass and high pass filter were designed. Order for each of the designs was higher than tens. The theoretical calculation for filter design seems to be easier than the code but the program can design a filter of any order.
There are no ripples in the pass band and stop band of Butterworth filter
ReplyDeleteYes.
DeleteIt is used for functions that order minimum 1
ReplyDeleteYes its minimum order is 1.
DeleteThis filter has advantage that it's output spectrum is monotonic in nature with no ripples at all in pass band as well as stop band.
ReplyDeleteYes, this is the advantage of Butterworth filter
DeleteIt is monotonic in nature.
ReplyDeleteThe Butterworth filter is a type of signal processing filter designed to have as flat a frequency response as possible in the pass band.
ReplyDeleteGroup delay largely frequency-dependent
ReplyDeleteButterworth filters generally have higher order
ReplyDeleteit is also referred as a maximally flat magnitude filter. The rate of falloff response of the filter is determined by the number of poles taken in the circuit
ReplyDeleteWe have to input parameters such as Ap,As,stop band and pass band frequency when we execute the scilab code
ReplyDelete