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A computer program for designing optimum FIR linear phase digital filters

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3 Author(s)
McClellan, J.H. ; Rice University, Houston, Tex ; Parks, T.W. ; Rabiner, L.

This paper presents a general-purpose computer program which is capable of designing a large Class of optimum (in the minimax sense) FIR linear phase digital filters. The program has options for designing such standard filters as low-pass, high-pass, bandpass, and bandstop filters, as well as multipassband-stopband filters, differentiators, and Hilbert transformers. The program can also be used to design filters which approximate arbitrary frequency specifications which are provided by the user. The program is written in Fortran, and is carefully documented both by comments and by detailed flowcharts. The filter design algorithm is shown to be exceedingly efficient, e.g., it is capable of designing a filter with a 100-point impulse response in about 20 s.

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Audio and Electroacoustics, IEEE Transactions on  (Volume:21 ,  Issue: 6 )