System object: dsp.DigitalDownConverter
Group delay of filter cascade
D = groupDelay(H,N)
[D,F] = groupDelay(H,N)
D = groupDelay(H,N) returns a vector of group delays, D, evaluated at N frequency points equally spaced around the upper half of the unit circle. If you don't specify N, it defaults to 8192.
[D,F] = groupDelay(H,N) returns a vector of frequencies, F, at which the group delay has been computed.