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Next: Lanczos Window Up: Window Definitions Previous: Hann and Hamming Window

Blackman Window

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.

\textrm{Blackman}(x,\tau)=\left \{ \begin{array}{cl}
...\vert x\vert < \tau$}\\
0 & \textrm{else}
\end{array} \right.
\end{displaymath} (10)

Although its frequency response is slightly worse below $\pi$, it approaches zero more smoothly above and turns out to produce quite satisfying results.