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Farrow Structure Design Procedure

Solve the $ N_\Delta$ equations

$\displaystyle z^{-\Delta_i} = \sum_{k=0}^N C_k(z) \Delta_i^k, \quad i=1,2,\ldots,N_\Delta
$

for the $ N+1$ FIR transfer functions $ C_k(z)$ , each order $ N_C$ in general

References: Laakso et al., Farrow


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``Bandlimited Interpolation, Fractional Delay Filtering, and Optimal FIR Filter Design'', by Julius O. Smith III, (From Lecture Overheads, Music 420).
Copyright © 2014-03-24 by Julius O. Smith III
Center for Computer Research in Music and Acoustics (CCRMA),   Stanford University
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