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    %% CPSD of Colored Noise Signals
% Generate two colored noise signals and plot their CPSD. Specify a
% length-1024 FFT and a 500-point triangular window with no overlap.

% Copyright 2015 The MathWorks, Inc.


%%
rng default
h = fir1(30,0.2,rectwin(31));
h1 = ones(1,10)/sqrt(10);
r = randn(16384,1);
x = filter(h1,1,r);
y = filter(h,1,x);
cpsd(x,y,triang(500),250,1024)