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Another quite simple window, which uses only polynomials, is the Welch
window.
![\begin{displaymath}
\textrm{Welch}(x,\tau)=\left \{ \begin{array}{cl}
1-\left(\f...
...\vert x\vert < \tau$}\\
0 & \textrm{else}
\end{array} \right.
\end{displaymath}](img25.gif) |
(7) |
Its frequency response is better than that of the Bartlett windowed
cosc function below
,
but it shows again a rather distinctive
bump above.
1999-04-08