An audio signal is band limited to 4 kHz. It is sampled at 8 kHz. What – McqOptions

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1.	An audio signal is band limited to 4 kHz. It is sampled at 8 kHz. What will be the spectrum of the sampled signal?
A.	-4 kHz to 4 kHz
B.	-8 kHz to 8 kHz
C.	every 4n kHz repeating
D.	every ¬± 8 kHz and operating as well as at zero (k integer)
Answer» D. every ¬± 8 kHz and operating as well as at zero (k integer)

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