For an all pass system \(H\left( z \right) = \;\frac{{{z^{ - 1}} - b}}{{1 - a{z^{ - 1}}}}\) If Re(a)≠0, Im(a)≠0, then b equals.
1
a
2
a*
3
1/a*
4
1/a
For an all pass system \(H\left( z \right) = \;\frac{{{z^{ - 1}} - b}}{{1 - a{z^{ - 1}}}}\) If Re(a)≠0, Im(a)≠0, then b equals.