Windowing

To further improve the output of the DFT, it is desirable to apply a window, to reduce the effects of the ``glitch''.

Applying no window at all is akin to applying a rectangle window--selecting a finite segment of length from a sampled sinusoid.

The spectral characteristics of a rectangle window can be seen by taking it's spectrum (see windowSpec.m).

**Figure 10:** Window Spectra.
$\scalebox{0.6}{\includegraphics{eps/windowSpec.eps}}$

``Music 270a: Complex Exponentials and Spectrum Representation'' by Tamara Smyth, Department of Music, University of California, San Diego (UCSD).