How many stable and causal systems with the same magnitude response are there?
I know this relates to an all pass system for two rational transfer functions but am not sure about the specifics of this
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2$\begingroup$ Wouldn't stability and causality be conserved when adding any delay? $\endgroup$– fibonaticMar 28, 2021 at 5:39
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$\begingroup$ This question appears to be homework. Complete answers to homework are off-topic, but specific questions about homework are acceptable if they include enough detail. Please edit the question to include more background about what you don't understand. $\endgroup$– Marcus MüllerMar 28, 2021 at 10:44
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$\begingroup$ there are infinite number of stable and causal LTI systems with the same magnitude response. $\endgroup$– robert bristow-johnsonMar 28, 2021 at 18:30
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