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Altera_Forum
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17 years ago

FIR_LP Problem

I have a problem of gain with a fir_lp (value < expected value )!!! config : filtre_type : low pass sample rate :10khz cutoff freq :500hz coeff : 15 input number system : unsigned bina...
Altera_Forum's avatar
Altera_Forum
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17 years ago

Cutoff freq is 1/20 of sample frequency, it's impossible to design a good FIR filter with 15 or 30 taps. A first or second order IIR filter will perform much better in this case.