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    %% FIR Differentiator
% Design a full-band differentiator filter of order 7. Display its
% zero-phase response. Use it to filter a 1000-sample vector of random
% data.

% Copyright 2015 The MathWorks, Inc.


%%

dFilt = designfilt('differentiatorfir','FilterOrder',7);
fvtool(dFilt,'MagnitudeDisplay','Zero-phase')
dataIn = randn(1000,1);
dataOut = filter(dFilt,dataIn);