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A new improvement to the Powell and Chau linear phase IIR filters

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3 Author(s)
Djokic, B. ; MOBTEL BKPTT, Belgrade, Yugoslavia ; Popovic, M. ; Lutovac, M.

An improvement to the realization of the linear-phase IIR filters is described. It is based on the rearrangement of the numerator polynomials of the IIR filter functions that are used in the real-time realizations proposed in literature. The new realization has better total harmonic distortion when a sine input is used, and it has smaller phase and group delay errors due to finite section length

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Signal Processing, IEEE Transactions on  (Volume:46 ,  Issue: 6 )