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view _beattracker/ftacf.m @ 9:4ea6619cb3f5 tip

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removed log files
author matthiasm
date Fri, 11 Apr 2014 15:55:11 +0100
parents b5b38998ef3b
children
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function acf = ftacf(x)


x = x(:);

[M,N] = size(x);

X = fft(x,2^nextpow2(2*M-1));
acf = ifft(X.*conj(X));

acf = acf(1:M)./[M:-1:1]';