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Altera_Forum's avatar
Altera_Forum
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12 years ago

what is the difference between the sampling and clock frequency about FIR filter

hi,everyone.i want to ask whether the frequency of sampling and clock need to keep the same in use of fir compiler. according to my understanding,if they don't keep the same,the processing data rate ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

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true of course and you the designer must make sure you clock the stream at the correct sampling rate. The easiest way is to have a clock same as sampling rate.

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Thank YOU.when we use fir compiler,we need set the value of Fs.so, i want to know that is it necessary that Fs must be equal to the front AD's sampling frequency.the Fs decides what performances about FIR .besides, is it have effect on data transmission? for example, the AD's sampling frequency is 100MHZ,signal's bandwidth is 40MHZ,which value i need choose for the Fs and clock frequency about FIR filter.