Question: (a) Verify that the reflection coefficient at any tube juncture in an acoustic tube model is bounded in magnitude by unity,
-1 ≤ ρk ≤ 1
(b) Suppose that we were to implement a digital filter realization of an N-tube acoustic model. It is also known that high-order digital filter realizations sometimes suffer from issues relating to finite precision arithmetic. Does the result of part (a) suggest a means of testing the N-tube digital filter realization for stability?