FIgdelFIR
Routine

double FIgdelFIR (double w, const float h[], int Ncof)
Purpose

Calculate the group delay for an FIR filter
Description
The group delay is calculated for the equivalent noncausal filter with
reference point at the midpoint of the filter. The delay to the midpoint
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 .
Parameters

> double w

Normalized radian frequency (0 to Pi).

> const float h[]

Array of Ncof filter coefficients

> int Ncof

Number of filter coefficients
Author / revision
P. Kabal
/ Revision 1.4 2003/05/09
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