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Soit le signal sinusoïdal  avec   , et . La fréquence d'échantillonnage ...

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Soit le signal sinusoïdal  avec  , et . La fréquence d'échantillonnage est . On calcule l'autocorrélation . Quelle est la première valeur strictement positive de qui correspond à un maximum de l'autocorrélation ?

Let us define a sinusoidal signal by with , and . The sampling frequency is . We calculate the autocorrelation . What is the first strictly positive value of that corresponds to a maximum of the autocorrelation?

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