BUTTER_NUMERATOR

Calculates the numerator coefficients for the Butterworth filter.

BUTTER_NUMERATOR (n, wn, fType, isDigital) returns ARRAY

n	An integer value indicating the order of the Butterworth filter.
wn	An array of values indicating that the cutoff frequency can have one or two elements.
fType	A text string. The filter type, can be one of {low, high, pass, stop}.
isDigital	A Boolean value.

The following example illustrates the BUTTER_NUMERATOR function:

Function	butter_numerator (6, {0.1951, 0.4081}, "pass", 1)
Result	{0.0005, 0, 0.0070, 0, -0.0094, 0, 0.0070, 0, -0.002, 8, 0,0.005}