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Altera_Forum
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12 years ago

FFT MegaCore Function Output is not as expected

Hi, I have generated one FFT MegaCore Function in my FPGA design and simulated it using test bench. And the output is compared with the expected values; but they are not same. the parameter...
Altera_Forum's avatar
Altera_Forum
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12 years ago

your data vector in above post is not 1024 samples but 1159 samples and it lacks continuity at wrap-up.

you must enter a known 1024 frame in both your fft and your reference model.

your power equation should not include sqrt unles you use 20*log...

regarding scaling by exp you can find out that from your fft doc or once you get correct signal you can find out the right scaling.