www.gusucode.com > dsp 案例源码程序 matlab代码 > dsp/PhaseDelayOfADiscreteTimeMultirateFilterExample.m

    %% Phase Delay of a Discrete-Time Filter 
Fs = 8000; Fcutoff = 2000;
FIRFilt = dsp.FIRFilter('Numerator', fir1(130,Fcutoff/(Fs/2)));
%%
% |phasedelay| computes the phase delay of the filter and 
% displays it using fvtool
phasedelay(FIRFilt);