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  1. #1
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    samples required by digital filters related to thier order

    i want to ask that how many samples or pulses are required by an iir and fir filter according to their order in other words how many samples a filter will take as an input data to process at a time

    •   Alt10th February 2013, 14:02

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  2. #2
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    Re: samples required by digital filters related to thier order

    The order of a FIR filter is the degree of its transfer function polynomial, i.e., the number of zeros.
    An N-order FIR filter uses N+1 input samples (the last one and the N previous).

    The order of a IIR filter is the degree of the denominator polynomial, i.e., the number of poles, provided it has no more zeros than poles.
    An N-order IIR filter uses the N previous output samples (and one or more input samples) for obtaining the output sample.

    Regards

    Z


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    •   Alt10th February 2013, 17:27

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  3. #3
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    Re: samples required by digital filters related to thier order

    thanks for help
    regards
    janaa



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