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What are the nodes that replace the adders in the signal flow graphs?

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+1 vote
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in Digital Signal Processing by (829k points)
What are the nodes that replace the adders in the signal flow graphs?

(a) Source node

(b) Sink node

(c) Branch node

(d) Summing node

I got this question during an interview.

My question is based upon Structures for IIR Systems in portion Discrete Time Systems Implementation of Digital Signal Processing

1 Answer

+1 vote
by (1.4m points)
Correct answer is (d) Summing node

To explain: Summing node is the node which is used in the signal flow graph which replaces the adder in the structure of a filter.

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