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New amplitude change functions for improving the filter response

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3 Author(s)
E. Gopinathan ; Calicut Regional Engineering College, Calicut, Kerala, India ; S. D. Roy ; R. Patney

A method is suggested for improving the response of a symmetric nonrecursive digital filter using several copies of that filter. This is based on shifting and/or scaling the amplitude change function (ACF). A new generalized ACF has been derived which has similar characteristics as that of the Kaiser-Hamming--Chebyshev ACF, but does not require additional correction filters for its implementation. Shifting and scaling of the new ACF are shown to result in further improvement of the response.

Published in:

IEEE Transactions on Acoustics, Speech, and Signal Processing  (Volume:32 ,  Issue: 3 )