Sunday, 23 April 2017

FIR filter (Frequency sampling)

     In the previous lab we performed FIR filter designing using windowing method. This lab was about designing a filter having linear or nonlinear filter. Required input data given was cutoff frequency and order of the filter. Here also to find h (n) we used to have (w) from that we replaced w by (2πk) /N that is sampling of frequency response, where N is range of sampling.
     Therefore Hd (w) is converted into Hd (k) having symmetrical sampled values about N/2 sampling point. And then by taking IDFT of Hd (k) we found required h (n) i.e. characteristic of the filter.
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1 comment:

  1. shrinish_00124 April 2017 at 08:40

    Which is the method that is preferred amongst the two and why?

    ReplyDelete

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