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Altera_Forum's avatar
Altera_Forum
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11 years ago

problem with FIR IP

FIR IP filter output waveform shake up and down , Input signal contains the useful signal and the noise signals , so the frequency of the noise signal may be greater than half of the sam...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

so your fir filter must work at 25MHz and filter off the 1 KHz tone i.e. a cutoff ratio of 1/25000. Very tough and not practical in FPGAs