Experiment No.8
In this experiment, we were required to design a digital FIR filter using Frequency Sampling Method (FSM). Scilab was used to implement it.
We implemented a digital FIR filter using Frequency sampling method. The input specifications were taken as usual and the magnitude response was plotted.
In frequency response of the obtained output signals of Frequency Sampling Method, ripples in the Stop Band obtained are of decreasing amplitudes. Phase plot of HPF and LPF are same if the order of both of them are same. Phase varies linearly with frequency , hence output will not be distracted. Also that as order increases number of side lobe increases.
DFT and FFT are good transforms
ReplyDeletenice explanation
ReplyDeleteFSM is faster than windowing method for fir filter designing
ReplyDeleteFSM is Faster than Windowing method for fir filter designing
ReplyDeleteTune aliasing takes place
ReplyDelete
ReplyDeleteeasy to Implement.
Easy to implement as less computations
ReplyDeleteFSM consist of uniformly sampling the desired frequency response and performing inverse DFT to obtain the corresponding impulse response.
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