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Altera_Forum's avatar
Altera_Forum
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18 years ago

FFT/IFFT Unity Gain Example

Here is an example that I did a while back when I was playing with the FFT/IFFT core. It was built with DSP Builder 6.1. Also it incorporates the unity gain formula highlighted in the Block floating ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Hi,

Sorry for the delay in response. I just saw this posting today...

It shouldn't be a big deal... probably some sort of rounding error due to fixed point representation... If you look at it... the dynamic range for image out is merely from 4 to -4. But the dynamic range for your real out is from 10^4 to -10^4ish area... therefore it's practically insignificant and I would not worry about it...

Hope this helps...