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Designing bandpass filter and to save the filter coefficients

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Stefan
Stefan 2014-2-6
Hi,
Can somoene please suggest a good way of designing a bandpass filter of order 11(to get 12 fitler coefficeints) with sampling frequency of 100Hz (as signal is being sampled at 100Hz)and also to save the filter coefficients in a variable.
I guess I need the bandpass lower cutoff=3Hz and higher cutoff=0.8Hz because when I checked the frequencies in my data I mostly have 1Hz frequency components and some lying below 3Hz.
The two data sets are attached here. thanks.

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