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Altera_Forum
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18 years ago

FIR coefficient reloading problem

I have a simple single rate FIR filter (StratixII, fully parallel, coef storage in M512, signed binary, 12 bit input data, 12 bit coefficient). I calculated a low pass with an external software, ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

If my coefficients are already in fixed point format, I would not scale them again in the GUI. Then 12-bit data_in with 12-bit coefficients give me 26-bit full resolution.

What happens if you use FIR full resolution output? I normally scale out of the FIR boundry for better control and it works fine.