Spectral Leakage
The DFT assumes its N-sample record repeats forever; if a sinusoid does not complete a whole number of cycles in the record, the implied periodic extension has a discontinuity and its energy smears across many DFT bins instead of landing in one.
This Concept is waiting for its first lesson!
The DFT assumes its N-sample record repeats forever; if a sinusoid does not complete a whole number of cycles in the record, the implied periodic extension has a discontinuity and its energy smears across many DFT bins instead of landing in one.
Are you a teacher? Sign in to start contributing.
Sign In