1.

What is the necessary and sufficient condition for a second order filter that no zero-input overflow limit cycles occur?

A. |a<sub>1</sub>|+|a<sub>2</sub>|=1
B. |a<sub>1</sub>|+|a<sub>2</sub>|&gt;1
C. |a<sub>1</sub>|+|a<sub>2</sub>|&lt;1
D. None of the mentioned
Answer» D. None of the mentioned


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