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Symmetric Window Constraint

Because we are designing a zero-phase window, use only the positive-time part $ h\left(n\right)$ :

$\displaystyle h\left(n\right)=w\left(n\right)\qquad n\geq 0$ (4.64)

$\displaystyle w\left(n\right)=\left\{ \begin{array}{ll} h\left(n\right) & n\geq 0\\ h\left(-n\right) & n<0\end{array} \right.$ (4.65)


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``Spectral Audio Signal Processing'', by Julius O. Smith III, W3K Publishing, 2011, ISBN 978-0-9745607-3-1.
Copyright © 2016-07-18 by Julius O. Smith III
Center for Computer Research in Music and Acoustics (CCRMA),   Stanford University
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