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EXP 7 - FIR Filter using Window method

After performing IIR Filter Design it was time to start FIR filter Design. In this experiment we have designed an FIR Filter using various Window functions.

Depending on the values of stop band attenuation the appropriate window function chosen like Bartlett, Hamming, Hanning and Rectangular. After execution of code the values of pass band and stop attenuation were verified from the graph.

Comments

  1. Unknown25 April 2017 at 22:09

    Rectangular Window function has the lowest Ap but calculations are drastically reduced..so function has to be chosen according to application also.

    ReplyDelete
    Replies
    1. Unknown25 April 2017 at 22:43

      The choice of the window depends on the noise characteristics, transition region and the number of coefficients required

      Delete
  2. Unknown25 April 2017 at 22:19

    Window function is used to truncate the infinite values of hd(n) and the window is selected based on the stop band attenuation requirement.

    ReplyDelete
  3. Unknown25 April 2017 at 22:29

    Hanning window provides stop band attenuation of 44db where as Blackman window provides highest attenuation of 74db

    ReplyDelete
  4. Akash Bangera28 April 2017 at 05:09

    The trick is to select the window function that will give a filter with the correct transition width and attenuation in stopband.

    ReplyDelete

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