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From: David Cubero on 18 Jun 2010 14:21
In file exchange there is an example of Fmdemodulation but i do not know what beta is; nayone knows something?
thank you very much

function y = FM(x,beta)

[r, c] = size(x);
if r*c == 0
y = [];
return;
end;
if (r == 1)
x = x(:);
len = c;
else
len = r;
end;

Df = 2*pi*beta*100;

x = interp(x,20);
x = x*Df;

Fs = 20*8000;
Fc = 40000;
t = (0:1/Fs:((size(x,1)-1)/Fs))';
t = t(:, ones(1, size(x, 2)));

x = 2 / Fs * pi * x;
x = [zeros(1, size(x, 2)); cumsum(x(1:size(x,1)-1, :))];
y = cos(2 * pi * Fc * t + x );
plot(y)
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Prev: matlab opengl figure performance: how to use hardware acceleration
Next: FM demodulation