?? fmpoly.m
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function x = fmpoly(N, p)% fmpoly -- create a signal with a polynomial frequency modulation%% Usage% x = fmpoly(N, p)%% Inputs% N length of the signal% p order of the polynomial phase (p=2 -> linear chirp)%% Outputs% x signal% Copyright (C) -- see DiscreteTFDs/Copyrighterror(nargchk(2,2,nargin));if (p<2) error('p must be at least 2')endif (rem(N,2)==0) center = N/2+1;else center = (N+1)/2;endn = (1:N)';x = exp(j*pi*(n-center).^p/(N/2)^(p-1)/p);
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