I have an Interpolating Cascaded Integrator Comb (CIC) filter designed as so:
Rate Change = 100 Number of Stages = 4 Differential Delay = 1
I'd like to calculate the group delay of this filter but I am not sure how. This question on DSP Related is helpful, but I am not sure my filter will have 0 delay.
Also, Richard Lyons explanation is helpful, but he doesn't directly deal with group delay.
I also have a Decimating CIC filter designed as so:
Rate Change = 25 Number of Stages = 4 Differential Delay = 1
How would I calculate its group delay?