double FIgdelFIR (double w, const float h, int Ncof)
Calculate the group delay for an FIR filter
The group delay is calculated for the equivalent non-causal filter with
reference point at the mid-point of the filter. The delay to the mid-point
is added to this figure. The group delay in seconds at frequency f for a
response with sampling frequency Fs can be calculated as
gdel = FIgdelFIR (2 * Pi * f / Fs, h, Ncof) / Fs .
-> double w
Normalized radian frequency (0 to Pi).
-> const float h
Array of Ncof filter coefficients
-> int Ncof
Number of filter coefficients
Author / revision
/ Revision 1.4 2003/05/09
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