Need Help with apply lowpass filter with window method lowpass design
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Hello, I'm trying to filter out the noise of my csv file data using lowpass at cut of freq of 5 hz but it give me this error. Any suggestion?
Thank you in advance
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Mathieu NOE
2021-2-23
hello
filter requires 3 input arguments, filter(b,a,x).
you cannot give a tf object as input argument of filter
your filter must be given as a numerator (b) and a denominator (a)
filter One-dimensional digital filter.
Y = filter(B,A,X) filters the data in vector X with the
filter described by vectors A and B to create the filtered
data Y. The filter is a "Direct Form II Transposed"
implementation of the standard difference equation:
a(1)*y(n) = b(1)*x(n) + b(2)*x(n-1) + ... + b(nb+1)*x(n-nb)
- a(2)*y(n-1) - ... - a(na+1)*y(n-na)
If a(1) is not equal to 1, filter normalizes the filter
coefficients by a(1).
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