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Altera_Forum
Honored Contributor
Honored ContributorHelp 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_ForumHonored Contributor
Honored ContributorTrue, the problem is truncation but windowing is meant for PSD(power spectral density), not fft per se. PSD breaks up a data stream into overlapping sections then windows each section then does fft on all followed by magnitude averaging over the sections - a pretty invloved computation for hardware.
Applying a window crudely and directly to the stream can improve amp fluctuation since it gives less weight to the side values but thus distorts fft output
