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Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

FFT output scaling

I will be grateful if anyone can help me here, because I'm having a really hard time trying to sort things out. I've already made a VHDL test bench to simulate a transform of a sinusoidal signa...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

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correct.

In 2's complement. a number is same value if you sign extend the MSBs.

In unsigned system you only sign extend with zeros.

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Now that you mentioned, I'm not sure if the input format is in 2's complement as well. The user guide is not clear about it, but I assume it is indeed 2's complement.