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Altera_Forum
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18 years ago

vhdl problem for iir filter

hi: guys i have a problem makes me crazy. how to use vhdl codes to implement iir filter y(n)= 2cos(w)*y(n-1) - y(n-2) and the initial conditions is y(-1)=sin(w),y(-2)=sin(2w). which m...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

to Frank:

thank you pay attentation to my problem.

yes, as you said i am doing a digital oscillator utilized a iir structure.

you said i need two registers to store previous y(n). i show u my codes as attached, may be when u see my codes you can understand my problem totally.

Please check out my codes, and give me some advise agian.

Thank you