In this experiment, we have designed linear phase FIR filter
using windowing method. Different types of windows are used to design FIR
filter, which includes Hamming window, Hanning window, Bartlett window, Blackman
window and Kaiser window. Here, we used Hanning window for designing of filter.
The parameters used for designing the FIR filters are attenuation in stop band(As),attenuation
in pass band (Ap),pass band frequency, stop band frequency and sampling
frequency. We have written scilab code with reference of designing method done
in class. Advantage of the windowing method is it requires minimum amount of
computational effort, so window method is simple to implement.
It is a very tedious method and difficult to implement.
ReplyDeletewell written!
ReplyDeleteAmong above mentioned windows,Blackman window has the highest value of parameter Ap,which is desirable
ReplyDeleteThe trick is to select the window function that will give a filter with the correct transition width and attenuation in stopband.
ReplyDeleteWindowing functions are selected depending on the As value
ReplyDeleteWell Written
ReplyDeleteblackman is best in terms of stopband attenution
ReplyDeleteRectangular window has the least value of As
ReplyDelete