Hanning window pole zero

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romi
romi on 27 Dec 2013
Answered: Honglei Chen on 27 Dec 2013
i want design FIR filter digital method with Hanning window but i've a trouble. In part of filter specify order, i want 20 order's but in part of current Filter Information looks "Order : 19". why this happening? thanks

Answers (1)

Honglei Chen
Honglei Chen on 27 Dec 2013
Hi Romi,
It seems to be a bug in FDATool. The display panel is giving out the wrong answer. The designed filter is indeed a filter of order 20. If you look at the coefficients or the impulse response, there are indeed 21 coefficients. Thanks for reporting the issue.

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