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x[n] o-->--+---->-----+
| |
-4 |
| |
(+)--T-->--(+)--T-->--+-->--o y[n]
| |
+---<-----1/4--------+
(+) are summing junctions
thanksHi,
I'll help get this started...
The difference equation:
y[n]=x[n-1]+y[n-2]/4-4*x[n-2]
The circuit redrawn:
Code:x[n] o-->--+---->-----+ | | -4 | | | (+)--T-->--(+)--T-->--+-->--o y[n] | | +---<-----1/4--------+ (+) are summing junctions
thanks for the response. "Discrete Time Signal Processing by Alan V.Oppenheim , Ronald W.Schafer & John R.Buck" is introduced by the professor as a reference or any other DSP book.I'd like to make an overall general comment about this question. I find it hard to help you without knowing your background. Please provide some context of what text books you are using, and what analysis tools you are expected to use when solving these problems. There are too many different approaches to deal with these questions.
For example, have you learned any of the following.
1. State space analysis or at least state space representation of systems.
2. Signal flow graphs for linear systems ( can you make one and then find transfer functions)
3. If you dont use signal flow graphs, what methods do you use for solving linear equations and finding transfer functions.
Another difficulty is that the text provided strikes me as a little different than most text books I'm familiar with, and there is mention of the "area in z-space and 1/z space" which is unclear to me. So providing the text book name and even some scans of relevant pages would help us (or at least would help me). Or, you can maybe just describe what you do know about solving these problems and exactly where you are having trouble.
I point these things out so that you will understand why you have not received a lot of feedback in this thread. It's not that no one other than MrAl wants to try to help, but there is a bit of an art to presenting questions in a way the helps the helper, so to speak.
I'll just make a note of how easy it is to find the difference equation, ...
I dont think i can say the same for Mason's, but I thought "Path Transmittance" was pretty general. I like to see other methods here too anyway.