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Software for Linear-Phase Filter Design

The Matlab Signal Processing Toolbox covers many applications with the following functions:

$\displaystyle \begin{tabular}{rl} \texttt{remez()} & (optimal Chebyshev linear-... ...or general FIR (or IIR)\\ & filter design \cite[page 50]{JOST}). \end{tabular}$

All of these functions except firls are implemented in the free, open-source, Octave Forge collection as well.

Methods for FIR filter design are discussed in the fourth book of the music signal processing series [87], and classic references include [64,68]. There is also quite a large research literature on this subject.

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Simple Linear-Phase Filter Examples