Nuttall 4-term cosine-sum window on [-1/2 1/2] (exactly 0 at the edges)
NuttallWindow[x]
Plot[NuttallWindow[x], {x, -1, 1}]
→ -Graphics-Plot3D[NuttallWindow[x]NuttallWindow[y], {x, -1, 1}, {y, -1, 1}, PlotRange -> All, Exclusions -> None]
→ -Graphics3D-NuttallWindow[0.1]
→ 0.7907549359259575