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Altera_Forum
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17 years ago

Help with altera FFT

hello; what i want to do is to get spectrum of an sinusoidal signal using the altera fft core i have generated a v8 fft with the following setting: fft point : 64 (to start with) archi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

If you don't window the data before the FFT you will have artifacts from the truncation at the end/beginning of the FFT. This would cause some of the change in magnitude that you are seeing. In addition, there will be a less defined spike at the frequency of interest.