0 votes 0 votes The causal realization of a system transfer function $H(s)$ having poles at $(2,-1), (-2,1)$ and zeroes at $(2,1), (-2,-1)$ will be stable, real, allpass unstable, complex, allpass unstable, real, highpass stable, complex, lowpass new gate2020-ee + – go_editor asked Feb 28, 2020 • edited Nov 15, 2020 by go_editor go_editor 1.9k points answer comment Share See all 0 reply Please log in or register to add a comment.