[Scilab-users] Generation of linear frequency

[Stanislav]

Hi.

function [x] =chirp (t, f0, t1, f1, varargin)

[ lhs, rhs] =argn (0);
if rhs < 5 then
    phi = 0;
else
    pause
    phi = varargin(1);
end
    mu = (f1-f0).*t1;
    x = exp(%i * 2 * %pi * ( mu./2.*(t.^2) + f0.*t + phi/360));
endfunction

t = 0:0.001:1;
x = chirp (t, 0,1,150);
scf();plot(real(x));xgrid

Stanislav




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