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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

You better try IIR filter such as the leaky integrator where:

y(n) = alpha*y(n-1) + (1-alpha)*x(n);

alpha from 0 ~ <1 to control cutoff point.