# Number of sinusoids Estimator (Scripts) 1.0

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• Last update: 6 years ago
• Price: Free |
• Operating system: Linux, Mac OS X, Win All, BSD, Solaris
• Publisher: Sebastien Paris (27 other programs)
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## Number of sinusoids Estimator (Scripts) Publisher's description

### Fast Algorithm estimating the number of sinusoids in a white Gaussian noise

Fast Algorithm estimating the number of sinusoids in a white Gaussian noise. This algorithm use a sub-space method based on chi-square statistics of eigen values of the Autocorrelation Matrix.

Example :

clear, close all hidden
N = 512;
L_vrai = 4;
fe = 2000;
F = (0:(fe/2)/(N/2-1):(fe/2));
snr = [-10 -10 -10 -10];
f = [25 230 500 780];
n = 32;
prob = 0.95;
y = zeros(1,N);
t = (0:(N-1))/fe;

for l = 1:L_vrai
y = y + sqrt(2)*10^(snr(l)/20)*sin(2.*pi.*f(l).*t + 2.*pi.*rand);
end

s = y + randn(1 , N);

[L , R] = nbsinu(s , n , prob);

#### System Requirements:

MATLAB 6.5 (R13)
Program Release Status: Major Update
Program Install Support: Install and Uninstall

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