How can the digital signal frequency be greater than 2 pi?

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halee awan

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digital signal frequency

sallam

my Q is ** can be the frequency of digital signal greater than (2 pi)
if no how it is if yes then how
any one who know breifly plz tell me
 

digital signal frequency

Digital frequency is nothing but 2pi(f/fs), wher fs is the samplig frequency. So the ultimate maximum possible is 2pi, even that is not a proper signal. Actually it can be in the range of -pi/2 to pi/2 only. You can also say it is valid only in the range -1/2 to 1/2 cycles per sample.
 

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