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Altera_Forum
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17 years ago

Fixed-Point Problem

I have generated a sinus signal with the Megacore-NCO in Quartus. My question is: How can I convert the signed binary output to a fixed-point representation?? I want to do this, because I hav...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Are you going to use a FIR or a IIR filter?

IIR filters could become unstable if using a small word size.

In any case a fixed-point filter will experiment a desviation from desired frequency response.

Altera FIR Compiler gives an estimation of frequency response desviation when using fixed point.