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How to find FIR approximation of an IIR function?

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Sherman Lim
Sherman Lim 2021 年 12 月 15 日
回答済み: Star Strider 2021 年 12 月 15 日
Hi all,
I have an IIR frequency response function which I need to convert to a FIR function. How do I convert such function? The function is as the following:
L,u,sigma squared, bw and theta zero are costants.

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Star Strider
Star Strider 2021 年 12 月 15 日
If it is possible to calculalte (and ideally plot) the magnitude response as a function of frequency, use the firls funciton to simulate a FIR filter design that matches it with reasonable precision. The firpm function is also an option.
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