### Vicky d (@dsplearn)

For CIC interpolator in the freq domain, It looks like the gain in matlab is (R*M)^N, not (R*M)^N / R (per theory). Even after cascading the filter with inverse...

I am implementing the CIC filter with 18 bit input, interpolation rate change of 92, differential delay of 1 and number of section as 5. This has bit growth of 27...

Rick, May be I've been trying to get the golden information applicable to filters in general from which I can derive the specific info I need. Let's say, I have...

In other words, what should be taken care in the FPGA design in terms of selecting bit widths at each filter stage to maintain the unity gain?

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