Abstract:
The use of optimization technique for designing digital filters
is of widespread practice. For a given order, filters designed by
using the iterative methods can closely approximates the 'best'
filter for that order than by using other methods.
In the present work, a design technique using Hooke and Jeeves
pattern search technique has been implemented. The design procedure
.is based on frequency sampling method. Optimization technique has
also been implemented to define the transition region of the desired
filter to maximise the stop band attenuation.
An algorithm has also been presented which gives the solution
for designing a filter, when the pass band and stop band frequencies
and maximum tolerable deviations in pass band and stop band are
given but the order of the filter is not given.
The developed design technique has been implemented on a
IBM 4331 Computer using FORTRAN language
