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On the invariance of second-order modes under frequency transformation in 2-D separable denominator digital filters

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2 Author(s)
Kawamata, M. ; Dept. of Electron. Eng., Tohoku Univ., Sendai, Japan ; Koshita, S.

This paper discusses the invariance of the second-order modes of 2-D separable denominator digital filters under frequency transformation. It is proved that the second-order modes of 2-D separable denominator digital filters are not invariant under all frequency transformations, but invariant under specific frequency transformations of which transfer functions are strictly proper.

Published in:

Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on  (Volume:5 )

Date of Conference:

2002