hannings
Hannings is not a standard technical term in itself. In common usage, it is often a misspelling or informal variant related to the Hann (or Hanning) window, a well-known function in digital signal processing.
The Hann window, named after Julius von Hann, is a raised-cosine window used to reduce spectral leakage
Properties and use include smooth transitions at the endpoints, moderate main-lobe width, and relatively low sidelobe
Etymology and nomenclature can cause confusion: Hann and Hanning refer to the same fundamental window, but
See also: window function, Hamming window, Blackman window, spectral leakage.