Overlap Processing

Overlap processing is desirable when using a Hanning Window because it ensures against loss of data for parts of the signal that occur near the beginning and end of the window.

Most FFT-type data collectors use 50% overlap processing as a default.

An overlap of 66.7% will completely correct for amplitude errors caused by the Hanning window.


See also: Fast Fourier Transform, Hanning Window, Spectrum Analyser.

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Subjects: Signal Processing