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The Blackman window is quite similar, too, to Hann and Hamming window,
but it has one additional cosine term to further reduce the ripple
ratio.
![\begin{displaymath}
\textrm{Blackman}(x,\tau)=\left \{ \begin{array}{cl}
0.42+\f...
...\vert x\vert < \tau$}\\
0 & \textrm{else}
\end{array} \right.
\end{displaymath}](img31.gif) |
(10) |
Although its frequency response is slightly worse below
,
it
approaches zero more smoothly above and turns out to produce quite
satisfying results.
1999-04-08