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Soit un signal , . On décime ce signal d'un facteur . Pour éviter le repliement de spectre, on fait précéder la décimation d'un filtre passe-bas de fréquence de coupure . Donner la valeur théorique de en KHz.
Consider a signal , . This signal is sub-sampled by a factor k=5. To avoid aliasing, the decimation is preceded by a low-pass filter with cutoff frequency . Give the theoretical value of in KHz.
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