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Are equiripple digital FIR filters always optimal with minimax error criterion?

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2 Author(s)
Ching-Yih Tseng ; Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA ; Griffiths, Lloyd J.

For exact linear phase digital finite impulse response (FIR) filters, it is well known that a filter with equiripple error function must be optimal with the minimax (Chebyshev) error criterion. The present letter points out that such analogy is not true for FIR filters which approximate arbitrarily specified magnitude and phase responses.<>

Published in:

Signal Processing Letters, IEEE  (Volume:1 ,  Issue: 1 )

Date of Publication:

Jan. 1994

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