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Honored Contributor
Honored ContributorEstimation IIR filter resources
Hi, In my application I will need implement high order (4), IIR, Butterworth, Low Pass filter, with cutoff frequency (-3dB) of ~1Hz and stop band of ~10Hz, with attenuation of -80dB. The input si...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- A cutoff f 1/50k is possible with large fir or small iir but a transition band of -80dB at 10/50000 is just not realistic for fir or iir. This requirement is too drastic for such a slow system. --- Quote End --- It's unhandy but feasible. There can be reasons why you want to operate a filter with this specification at 50 kS/s sampling rate. But it can be expected that a multi-rate design results in overall lower resource utilization.
