method for calculating sampling frequency of a signal

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anshu_neha

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hello friends,
a signal is periodic with period T and number of samples in one period is N then what is sampling frequency and how to calculate this.

thanks n regards
 

f_sampling=1/(N*T)
 
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    djoy

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The nyquiste theorem says that al least two times the maximum frequency of the signal.
But in the books there is a note that in real life it doesn't work. At least must be 4 times the maximum frequency.
Over here the telephine company uses 8 times.
so: f_sampling≥4*f_maximum_of_the_signal
 

anshu_neha said:
hello friends,
a signal is periodic with period T and number of samples in one period is N then what is sampling frequency and how to calculate this.

thanks n regards
Click to expand...

I have a curiosity. What do you mean by the term N?
 

umesh49 said:
I have a curiosity. What do you mean by the term N?
Click to expand...

Bro N is number of samples in each period.

Bro calculate sampling frequency by formulae given above and just double it to satisfy nyquiest criteria.and sample the signal.
 

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