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First-Order Allpass Filter Section

Analog Transfer Function:

$\displaystyle \hbox{AP}_{1}^{\,\omega_b} \mathrel{\stackrel{\mathrm{\Delta}}{=}}\frac{s-\omega_b}{s+\omega_b}.
\protect$

Digital Transfer Function:

$\displaystyle \hbox{AP}_{1}^{\,g_i} \mathrel{\stackrel{\mathrm{\Delta}}{=}}\frac{g_i + z^{-1}}{1 + g_i z^{-1}}.
$


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Download DelayVar.pdf
Download DelayVar_2up.pdf
Download DelayVar_4up.pdf

``Time Varying Delay Effects'', by Julius O. Smith III, (From Lecture Overheads, Music 420).
Copyright © 2008-02-08 by Julius O. Smith III
Center for Computer Research in Music and Acoustics (CCRMA),   Stanford University
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