Butterworth Filter Design

Sir had explained to us the basic of all filters. Once we understood the range of frequencies allowed and rejected by lpf,hpf,apf,bpf,bsf we decide the transfer function. The position of poles and zeroes for each filter was told by Talele Sir. Accordingly, we took a transfer function and plotted the magnitude response in Scilab using the frmag function.we also plotted the pole-zero graph. we observed the effect on amplitude and bandwidth by varying the poles and zeroes

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  1. Unknown16 May 2018 at 11:16

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  2. Unknown16 May 2018 at 11:17

    What if the transfer function was not known??? ...then how would you plot the magnitude response???

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    Replies
    1. Naman Patwa16 May 2018 at 20:21

      then by knowing the input and output we have to first find transfer function

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  3. Dhara16 May 2018 at 11:38

    scilab is really good for filter design. Try to implement complex algorithm using it.

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  4. Unknown16 May 2018 at 11:51

    i am using matlab, is it ok for filter design or it lags behnd scilab?

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  5. ANIKET SINGH16 May 2018 at 19:31

    IIR, though unstable, requires a significant less amount of memory than FIR filters.

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