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Altera_Forum's avatar
Altera_Forum
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10 years ago

digital filter

hello everybody. i am beginning with vhdl an i try to implement a digita filter on cyclone 2 This is the code i havebut i d ont understand why it doesnt work thk for help library IEEE; ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

--- Quote Start ---

my problem is when i calculate the coeff the are not interger

this is one example of the coef

[0.000280,

0.003809,

0.010263,

0.013750,

0.010263,

0.003809,

0.000280]

--- Quote End ---

scale up enough for integer resolution e.g. round(0.00028*2^20) = 294

Then at final sum discard (20 LSBs or so, not critical but affects gain)