We implemented a second way to design linear phase FIR Filters. Here we first calculate the desired frequency response as done in the windowing method. Then we sample it in the frequency domain and finally take inverse to get the response for the filter.
This experiment was performed using the Scilab. After generating a code involving DFT and IDFT functions it was implemented.Thus, the plot was studied.
We can use this for good design of narrow band filters
ReplyDeleteYes like digital resonator
ReplyDeleteThis is a easy approach as compared to Window Method.
ReplyDeleteFSM is efficient
ReplyDeleteThe Frequency Sampling method for filter design uses the I.D.F.T (Inverse Discrete Fourier Transform)
ReplyDeleteWhat was the sampling frequency taken as?
ReplyDeletehe frequency-sampling method for FIR filter design is perhaps the simplest and most direct technique imaginable when a desired frequency response has been specified.
ReplyDelete